Transfer Marriott Points to Airlines: 3:1 and the Math

Yes: Marriott lists 37 airline programs, including United, Delta, American and Southwest, and converts at 3 points to 1 mile to all but Air New Zealand, and adds 5,000 bonus miles for every 60,000 points sent in one transaction (10,000 for United; none for American, Avianca or Delta). Treat the transfer as a last step, not a default. Before you transfer Marriott Bonvoy points to airline miles, confirm the airline account, the current transfer option in Marriott, the exact flight you want, the cash price, and whether the miles will actually book it. Once hotel points become airline miles, you may lose the flexibility to use them for hotel nights or a different trip.

What does Marriott give you per point?

Marriott's points-to-miles page, read on September 25, 2026 and again on September 27, sets these terms:

Ratio: 3 Marriott points to 1 airline mile "with most programs". The one exception it lists is Air New Zealand Airpoints, at 200 points to 1 Airpoint, with a 75-Airpoint bonus in place of the 5,000 miles.
Bonus: 5,000 bonus miles for every 60,000 points transferred, except to American Airlines AAdvantage, Avianca LifeMiles and Delta SkyMiles, which get none. United MileagePlus gets 10,000 bonus miles per 60,000 points instead.
Limits: 3,000 to 240,000 points per day.
Names: for most airlines, the name on the frequent flyer account must match your Marriott first and last name.

That page states no transfer time; Marriott's program terms say miles post within one week in most cases (see the steps below), so leave slack before a scarce award.

Here is what 60,000 Marriott points become under those rules:

Airline program	Base miles (60,000 ÷ 3)	Bonus	Total miles
Most programs	20,000	5,000	25,000
United MileagePlus	20,000	10,000	30,000
Delta, American, Avianca	20,000	none	20,000

The bonus comes in 60,000-point blocks, so the transfer size matters. Moving 57,000 points gets 19,000 miles and no bonus; moving 60,000 gets 25,000 to most programs. If an award needs 22,000 miles in one of the "most programs" airlines, the 60,000-point transfer is the cheaper route even though it leaves miles over: 66,000 points at a flat 3:1 would be needed otherwise.

Then price the hotel value you give up. A hypothetical example, not a quote: if your Marriott points typically book hotel nights worth 0.7 cents each, 60,000 points are worth about $420 to you in hotels. Sent to a most-programs airline they become 25,000 miles, so each mile has to be worth at least $420 ÷ 25,000 = 1.68 cents before the transfer beats the hotel. At United (30,000 miles) the bar is 1.40 cents; at Delta (20,000 miles) it is 2.10 cents. Put your own hotel value in place of 0.7 cents: a Marriott point is worth whatever the hotel night you would actually book costs in cash, divided by its points price. The hotel points vs cash calculator works that number out for a whole stay, with the room tax, the resort fee Marriott leaves to the member on award stays at hotels that charge one, and the fifth night free counted.

To size a transfer for your own award, the Marriott points to miles calculator finds the smallest transfer that covers it, counts the bonus, and compares the flight with your hotel value.

The checklist below is the order to follow once that math says yes.

Which airlines can you transfer Marriott points to?

Marriott's points-to-miles page, re-read on September 27, 2026, lists 37 airline programs (its own heading says 38 participate). Every one but Air New Zealand converts at 3:1. What differs is the bonus, and whether a bank or Bilt Rewards reaches the same program for far fewer points:

60,000 Marriott points become	Airline programs	Bank or Bilt routes to the same program (from our transfer partner matrix)
30,000 miles (10,000 bonus)	United MileagePlus	Chase and Bilt, 1:1 (Bilt excludes points earned on rent paid with its Mastercard)
20,000 miles (no bonus)	Delta SkyMiles	Amex, 1:1, plus Amex's fee of $0.0006 a point
20,000 miles (no bonus)	American Airlines AAdvantage	Citi, 1:1 on its full-rate cards such as Strata Premier (1,000 to 700 on its other cards)
20,000 miles (no bonus)	Avianca LifeMiles	Amex, Citi, Capital One and Bilt
25,000 miles (5,000 bonus)	20 programs a bank or Bilt also reaches: Aer Lingus AerClub, Aeromexico Rewards, Air Canada Aeroplan, Air France-KLM Flying Blue, ANA Mileage Club, Atmos Rewards, British Airways Club, Cathay, Emirates Skywards, Etihad Guest, Iberia, Japan Airlines Mileage Bank, Qantas, Qatar Airways Privilege Club, Singapore KrisFlyer, Southwest Rapid Rewards, TAP Miles&Go, Thai Royal Orchid Plus, Turkish Miles&Smiles, Virgin Atlantic Flying Club	At least one of Chase, Amex, Citi, Capital One and Bilt, most at 1:1
25,000 miles (5,000 bonus)	12 programs no bank or Bilt reaches directly: AEGEAN Miles+Bonus, Air China PhoenixMiles, China Southern Sky Pearl Club, Copa ConnectMiles, Ethiopian ShebaMiles, Frontier Miles, Hainan Fortune Wings Club, LATAM Pass, LATAM Pass Brazil, Saudia Alfursan, Virgin Australia Velocity, Vueling Club	None. Vueling Club spends Avios, which British Airways lets you move in from British Airways Club.
375 Airpoints (300 at 200:1, plus a 75-Airpoint bonus)	Air New Zealand Airpoints	None

Where a bank reaches the same program, price that route first. 60,000 Marriott points buy 20,000 Delta SkyMiles. So do 20,000 Amex points plus $12 of Amex's fee. As a hypothetical example, at 0.7 cents per Marriott point (your hotel value) and 1 cent per Amex point (the fixed rate Amex applies to flights booked through Amex Travel, from our Points Value Index), the Marriott route gives up $420 of value and the Amex route $212. For United the gap is smaller but still there: 60,000 Marriott points ($420 at 0.7 cents) or 30,000 Chase points ($300 at Chase's 1-cent cash-back rate) buy the same 30,000 miles. The which-points calculator prices one award from each balance you hold.

Where Marriott is the only transfer route, as with Frontier, LATAM, Copa or Virgin Australia, the only question is whether the flight is worth more than the hotel nights the points would buy. The Marriott points to miles calculator answers it for one award.

How do you transfer Marriott points to an airline, and how long does it take?

Marriott's program terms (section 3.6, read September 27, 2026) set the mechanics:

Join the airline program in your own name. For most airlines the name on the frequent flyer account must match your Marriott first and last name, so for those airlines you cannot send points to another person's airline account.
Start the transfer from your Marriott account. The Transfer Points link on the points-to-miles page opens the conversion; pick the airline, enter your frequent flyer number and the points. You can move 3,000 to 240,000 points a day.
Send each bonus block in one transaction. The terms pay the bonus only when the points go "through a single transaction" that reaches the 60,000-point threshold. Two transfers of 30,000 points earn no bonus; one of 60,000 earns 5,000 miles (10,000 at United).
Allow a week. The terms say miles post within one week in most cases. Marriott prints no faster time, so find the award, and hold it if the airline allows, before you convert.
It cannot be undone. Once miles are ordered, Marriott does not re-credit the points, and the airline program's own rules govern the miles from then on.

Can you use Marriott points to pay for a flight without transferring?

Yes. Marriott's Air + Car portal, read on September 26, 2026, lets you book airfare with "Points" or "Points plus Cash", with points-plus-cash bookings starting at 10,000 points. It names United and says hundreds of other airlines are bookable. The page does not print a value per point, so work it out from the price the portal shows you:

value per Marriott point = (cash fare of the same flight − any cash you still pay) ÷ points charged × 100

Then compare three numbers for the same flight:

Path	What to compute	Hypothetical example, not a quote
Air + Car portal	Cash fare ÷ portal points × 100	A $300 fare priced at 40,000 points returns 0.75¢ per point.
Transfer to the airline	(Cash fare − award taxes) ÷ Marriott points transferred × 100	A 12,500-mile award with $6 in taxes needs 37,500 points at 3:1: ($300 − $6) ÷ 37,500 × 100 = 0.78¢.
Keep the points for a hotel night	Your hotel value per point	0.7¢ in this example.

The highest number wins, but only when it is clearly ahead. The portal books a paid ticket on the cash fare, so there is no award seat to find and no transfer to wait for, which matters when award space is scarce. The transfer can win by much more when a partner award is cheap in miles, or when the transfer reaches a 60,000-point bonus block. The portal can win when the airline has no award seat or charges high award taxes. Run the portal price through the points vs cash calculator with your hotel value as the baseline.

Can you transfer airline miles to Marriott points?

Only from some airlines. Marriott's Convert Miles to Points page, read on September 26, 2026, lists 10 programs, and says you request the conversion with the airline and must be a member of both programs. The ratios are printed as miles to points:

Airline program	Printed ratio (miles : points)	10,000 miles become
Aeroplan, United MileagePlus, Atmos Rewards	1:1	10,000 points
ANA Mileage Club	1:1 (Marriott marks it with a footnote)	10,000 points
Emirates Skywards	3:2	about 6,667 points (Marriott does not state how it rounds)
Japan Airlines Mileage Bank, Singapore KrisFlyer	4:3	7,500 points
Cathay Pacific, Qatar Privilege Club, Ethiopian ShebaMiles	2:1	5,000 points

Delta SkyMiles, American AAdvantage and Southwest Rapid Rewards are not on that list. On the date we checked there was no Marriott-published way to turn Delta, American or Southwest miles into Bonvoy points. The airline's own conversion screen sets any minimum, fee and timing; Marriott's page does not state them.

Is it worth it? Usually not. A hypothetical example: at a 1:1 ratio, 10,000 United miles become 10,000 Marriott points. If your Marriott points are worth 0.7¢ each in hotel nights, that is $70, or 0.7¢ per mile given up. An award that returns more than 0.7¢ per mile beats this conversion, so price your next award first. The conversion makes sense mainly to finish a hotel award that is a few thousand points short, or to use miles that have no flight use left. Check the airline's own rules first: the miles may expire, or may pool with family, which could be the better way to use a small balance. The same one-way logic applies to bank points: see whether airline miles can go back to credit-card points.

The Marriott no-stranding checklist

Do not transfer until every line is true:

I opened Marriott's official points-to-miles redemption page or my signed-in Marriott account.
The airline program I want is available to me in the current Marriott flow.
My airline loyalty account name and number match the passenger details I plan to use.
The exact airline award is visible and bookable in the airline program now.
I wrote down the miles required, taxes, fees, and the cash fare I would actually pay.
I compared the airline-mile redemption against the Marriott hotel value I would give up.
I am transferring only the amount needed for this trip, not stockpiling airline miles.
I can book soon after the miles arrive, and I accept that program rules can change.

Use this checklist as the next action before any transfer. If one line is uncertain, leave the points in Marriott until you can verify it.

A simple decision worksheet

Fill this in before moving points:

Worksheet line	Your answer
Airline program	______
Exact route and date	______
Miles needed in airline account	______
Taxes and fees	______
Cash fare you would actually buy	______
Marriott points you would move	______
Hotel redemption you would give up	______
Transfer confirmed in official Marriott flow?	yes / no
Award confirmed in airline account?	yes / no
Decision	transfer / wait / book hotel / pay cash

This worksheet is the useful artifact: it forces the transfer decision to compete with both a cash flight and a hotel use of the same Marriott points.

If Marriott is advertising a transfer promotion, our free transfer bonus calculator shows how many of your points the airline award really costs with the bonus applied.

When you should not transfer

Do not transfer Marriott Bonvoy points to airline miles just because an airline appears on a partner list or because a blog says a route used to be valuable. Avoid the transfer when:

the airline award is not visible in your own account;
you do not know the taxes, fees, or booking rules;
you are relying on an old transfer ratio, bonus, or airline list (the terms above are dated; recheck Marriott's page on the day);
your transfer is just under a 60,000-point block, or split into smaller transactions, so you would miss the bonus;
you might need the points for a hotel stay soon;
the cash fare is low enough that paying cash preserves more flexibility;
the transfer would create leftover airline miles with no clear use.

The safest default is to keep the points in the more flexible place until the booking is real.

How this differs from bank point transfers

Marriott points are hotel loyalty points first. Bank points such as Chase Ultimate Rewards or American Express Membership Rewards are usually designed around flexible transfer and portal choices. Marriott's points-to-miles path can be useful, but the opportunity cost is different: you are giving up hotel redemption options, not just moving a generic bank currency.

That is why this page links the Marriott decision back to the broader transfer workflow. Use the Chase transfer guide when the starting currency is Chase points. Use the Avios transfer guide or the JetBlue transfer guide when the problem is an airline currency. Use this Marriott checklist when the starting balance is Marriott Bonvoy.

What we checked, and when

What we checked	Source	Checked
Marriott converts at 3:1 with most programs, adds 5,000 miles per 60,000 points (10,000 for United; none for American, Avianca, Delta), allows 3,000-240,000 points a day and requires matching names for most airlines. Recheck on the day you transfer; Marriott can change these terms.	Marriott's points-to-miles page (program's own page)	2026-09-25
Marriott's list names 37 airline programs (its heading says 38): 3:1 for all but Air New Zealand (200:1, 75-Airpoint bonus). Bank and Bilt routes to the same programs are from our transfer matrix (issuers' own pages, 2026-09-25 to 2026-09-27).	Marriott's points-to-miles page (program's own page)	2026-09-27
The bonus needs the points in a single transaction at the 60,000-point threshold (3.6.a); names must match for most airlines (3.6.b); miles post within one week in most cases (3.6.c); no re-credit once ordered (3.6.d).	Marriott Bonvoy terms and conditions, section 3.6 (program's own page)	2026-09-27
Ten airlines convert miles to Marriott points at the printed ratios above; Delta, American and Southwest are not listed; the conversion is requested with the airline.	Marriott's Convert Miles to Points page (program's own page)	2026-09-26
Airfare can be booked with points or points plus cash (from 10,000 points) through Air + Car; no value per point is printed.	Marriott Bonvoy Air + Car page (program's own page)	2026-09-26

Our own rule: the safest transfer is tied to a specific bookable award, presented here as a safety workflow, not a Marriott promise. The worked examples on this page are our own and hypothetical; no live award availability, award price or hotel value is claimed.

FAQ

Can I transfer Marriott Bonvoy points to airline miles?

Yes. Marriott's points-to-miles page converts to most of its airline programs at 3 points to 1 mile, with 5,000 bonus miles per 60,000 points (10,000 for United; none for American, Avianca or Delta). Check the current flow in your account before you move points; the terms can change.

Is transferring Marriott points to airline miles always a good deal?

No. The transfer is only worth considering when a specific airline award beats both the cash fare and the hotel use you would give up. If the value is unclear, keep the points in Marriott.

Can I use Marriott points for flights directly?

Yes, through Marriott's Air + Car portal, with points or points plus cash. The portal does not print a value per point, so divide the cash fare by the points it charges and compare that with a transfer and with your hotel value.

Can I transfer Marriott points to Delta?

Yes, at 3:1 with no bonus: 60,000 Marriott points become 20,000 SkyMiles. Amex Membership Rewards is the only bank list with Delta, at 1:1 plus Amex's fee of $0.0006 a point, so 20,000 Amex points and $12 do the same job. Price both before you move hotel points.

How long does a Marriott points transfer take?

Marriott's terms say the miles post within one week in most cases, and the transfer cannot be reversed once the miles are ordered. Find the award first, and hold it if the airline allows.

Can I transfer Delta miles to Marriott?

Not on the date we checked. Marriott's Convert Miles to Points page lists 10 airlines, including United, Aeroplan, Atmos Rewards, Emirates, Singapore and Qatar. Delta, American and Southwest are not on it.

Should I transfer before I find an award flight?

No. Find the airline award first, then verify the Marriott transfer option, then move only what the booking needs. Transferring first can strand value in an airline account.

What sources should I check?

Check Marriott's official points-to-miles page, Marriott Bonvoy terms, and the airline program account where you plan to book. The ratio and bonus rules on this page were read from Marriott's page on the date shown, and the posting time and single-transaction rule from section 3.6 of its terms.

Sources

Marriott Bonvoy points-to-miles redemption page, read 2026-09-25 and 2026-09-27 (airline list): https://www.marriott.com/loyalty/redeem/travel/points-to-miles.mi
Marriott Bonvoy terms and conditions, section 3.6 (Airline Frequent Flyer Programs), read 2026-09-27: https://www.marriott.com/loyalty/terms/default.mi
Marriott Bonvoy Convert Miles to Points page, read 2026-09-26: https://www.marriott.com/loyalty/earn/miles/miles-to-points.mi
Marriott Bonvoy Air + Car page, read 2026-09-26: https://airandcar.marriottbonvoy.com/content/use-points-redeem-air-car-travel

Sources

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