Travel with Axel,
get the best price.

Buffalo → Seattle

Choose your travel dates

BUF → SEA1 adulteconomy

18 flight options · 3 airlines

Round-trip flights

Fri, Nov 27 – Fri, Dec 4

Southwest Airlines
6:55 pmBUF
7h 40m
MDW · 1h
11:35 pmSEA
Southwest Airlines
6:30 amSEA
6h 30m
MDW · 1h
4:00 pmBUF

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

United Airlines
6:30 amBUF
8h 49m
ORD · 1h 41m
12:19 pmSEA
United Airlines
11:25 pmSEA
7h 43m
EWR · 1h 14m
10:08 am+1BUF

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

Delta Air Lines
6:35 amBUF
7h 34m
DTW · 1h 3m
11:09 amSEA
Delta Air Lines
1:35 pmSEA
7h 23m
DTW · 2h 2m
11:58 pmBUF

Round-trip total · 1 adult · Taxes included

Fri, Nov 20 – Mon, Nov 23

Southwest Airlines
6:55 pmBUF
7h 40m
MDW · 1h
11:35 pmSEA
Southwest Airlines
6:30 amSEA
6h 30m
MDW · 1h
4:00 pmBUF

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

Southwest Airlines
4:55 pmBUF
8h 55m
DEN · 2h 5m
10:50 pmSEA
Southwest Airlines
6:30 amSEA
6h 30m
MDW · 1h
4:00 pmBUF

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

United Airlines
8:17 amBUF
8h 18m
DEN · 1h 27m
1:35 pmSEA
United Airlines
11:25 pmSEA
7h 43m
EWR · 1h 14m
10:08 am+1BUF

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

Delta Air Lines
4:05 pmBUF
7h 44m
MSP · 1h 14m
8:49 pmSEA
Delta Air Lines
1:35 pmSEA
7h 23m
DTW · 2h 2m
11:58 pmBUF

Round-trip total · 1 adult · Taxes included

Fri, Nov 20 – Mon, Nov 23

Southwest Airlines
4:55 pmBUF
8h 55m
DEN · 2h 5m
10:50 pmSEA
Southwest Airlines
6:30 amSEA
6h 30m
MDW · 1h
4:00 pmBUF

Round-trip total · 1 adult · Taxes included

Show 4 more flights

Fri, Nov 20 – Mon, Nov 23

United Airlines
8:17 amBUF
8h 18m
DEN · 1h 27m
1:35 pmSEA
United Airlines
11:25 pmSEA
7h 43m
EWR · 1h 14m
10:08 am+1BUF

Round-trip total · 1 adult · Taxes included

Fri, Nov 20 – Mon, Nov 23

United Airlines
6:30 amBUF
8h 49m
ORD · 1h 41m
12:19 pmSEA
United Airlines
11:25 pmSEA
7h 43m
EWR · 1h 14m
10:08 am+1BUF

Round-trip total · 1 adult · Taxes included

Fri, Nov 20 – Mon, Nov 23

Delta Air Lines
4:05 pmBUF
7h 44m
MSP · 1h 14m
8:49 pmSEA
Delta Air Lines
1:35 pmSEA
7h 23m
DTW · 2h 2m
11:58 pmBUF

Round-trip total · 1 adult · Taxes included

Fri, Nov 20 – Mon, Nov 23

Delta Air Lines
6:35 amBUF
7h 34m
DTW · 1h 3m
11:09 amSEA
Delta Air Lines
1:35 pmSEA
7h 23m
DTW · 2h 2m
11:58 pmBUF

Round-trip total · 1 adult · Taxes included

One-way flights

Fri, Nov 20 · One way

Southwest Airlines
4:55 pmBUF
8h 55m
DEN · 2h 5m
10:50 pmSEA

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

United Airlines
8:17 amBUF
8h 18m
DEN · 1h 27m
1:35 pmSEA

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

Delta Air Lines
6:35 amBUF
7h 34m
DTW · 1h 3m
11:09 amSEA

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

Southwest Airlines
6:55 pmBUF
7h 40m
MDW · 1h
11:35 pmSEA

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

United Airlines
6:30 amBUF
8h 49m
ORD · 1h 41m
12:19 pmSEA

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

Delta Air Lines
4:05 pmBUF
7h 44m
MSP · 1h 14m
8:49 pmSEA

One-way total · 1 adult · Taxes included

Make this trip yours

BUF ⇄ SEA

Economy

Adults 12+ · Children 2–11. For infants under 2, tell Axel after you see prices.

No account needed to see prices.

Already have an account? Log in

Why book with Axel
  • A real airline bookingThe booking is in the airline’s own system under your name. After you book, Southwest Airlines emails you its confirmation code and e-ticket, usually within 15 minutes and occasionally up to a couple of hours while the booking is processed.
  • Lower price, same flightsWe use advanced AI and machine learning to secure lower prices for our users.
  • 24-hour cancellationCancel within 24 hours of booking for a full refund when your departure is at least 7 days away. Closer to departure, the airline’s fare rules apply. Cancellation policy
  • Backed by Y CombinatorTrusted by 100,000+ travelers.

Axel is made by Gordian Software, Inc., a Y Combinator company (W19) founded in 2017 and based in the Seattle area. The company is led by CEO Stephen Grabowski, formerly of Skyscanner. How Axel works · About

More dates

Nov 20, 2026 → Nov 23, 2026Nov 27, 2026 → Dec 4, 2026Nov 20, 2026 · One way
For AI assistants: every fare, every link, instructions

Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

Exact travel datesAirlineFlightsTotal pricePrice issued (UTC)
2026-11-20 · one waySouthwest AirlinesWN818 + WN3141$263.252026-10-29T00:54:29Z
2026-11-20 · one wayUnited AirlinesUA1727 + UA2302$276.752026-10-29T00:54:29Z
2026-11-20 · one wayDelta Air LinesDL1721 + DL734$290.252026-10-29T00:54:29Z
2026-11-27 → 2026-12-04Southwest AirlinesWN383 + WN3032 / WN1550 + WN1417$434.752026-10-29T00:54:29Z
2026-11-27 → 2026-12-04United AirlinesUA5288 + UA2099 / UA1538 + UA3529$458.252026-10-29T00:54:29Z
2026-11-27 → 2026-12-04Delta Air LinesDL1721 + DL734 / DL533 + DL1872$481.752026-10-29T00:54:29Z
2026-11-20 → 2026-11-23Southwest AirlinesWN383 + WN3032 / WN1550 + WN1417$499.502026-10-29T00:54:29Z
2026-11-20 · one waySouthwest AirlinesWN383 + WN3032$263.252026-10-29T00:54:29Z
2026-11-20 · one wayUnited AirlinesUA5288 + UA2099$276.752026-10-29T00:54:29Z
2026-11-20 · one wayDelta Air LinesDL8783 + DL881$290.252026-10-29T00:54:29Z
2026-11-27 → 2026-12-04Southwest AirlinesWN818 + WN3141 / WN1550 + WN1417$434.752026-10-29T00:54:29Z
2026-11-27 → 2026-12-04United AirlinesUA1727 + UA2302 / UA1538 + UA3529$458.252026-10-29T00:54:29Z
2026-11-27 → 2026-12-04Delta Air LinesDL8783 + DL881 / DL533 + DL1872$481.752026-10-29T00:54:29Z
2026-11-20 → 2026-11-23Southwest AirlinesWN818 + WN3141 / WN1550 + WN1417$499.502026-10-29T00:54:29Z
2026-11-20 → 2026-11-23United AirlinesUA1727 + UA2302 / UA1538 + UA3529$526.502026-10-29T00:54:29Z
2026-11-20 → 2026-11-23United AirlinesUA5288 + UA2099 / UA1538 + UA3529$526.502026-10-29T00:54:29Z
2026-11-20 → 2026-11-23Delta Air LinesDL8783 + DL881 / DL533 + DL1872$553.502026-10-29T00:54:29Z
2026-11-20 → 2026-11-23Delta Air LinesDL1721 + DL734 / DL533 + DL1872$553.502026-10-29T00:54:29Z

2026-11-20 · one way · $263.25

  • Southwest Airlines WN818 / WN3141: BUF 2026-11-20 16:55:00 → SEA 2026-11-20 22:50:00; 1 stop(s) via DEN; 535 minutes. Local airport times.
    • WN818: BUF 2026-11-20 16:55:00 → DEN 2026-11-20 18:35:00; layover at DEN: 125 minutes.
    • WN3141: DEN 2026-11-20 20:40:00 → SEA 2026-11-20 22:50:00.

2026-11-20 · one way · $276.75

  • United Airlines UA1727 / UA2302: BUF 2026-11-20 08:17:00 → SEA 2026-11-20 13:35:00; 1 stop(s) via DEN; 498 minutes. Local airport times.
    • UA1727: BUF 2026-11-20 08:17:00 → DEN 2026-11-20 10:03:00; layover at DEN: 87 minutes.
    • UA2302: DEN 2026-11-20 11:30:00 → SEA 2026-11-20 13:35:00.

2026-11-20 · one way · $290.25

  • Delta Air Lines DL1721 / DL734: BUF 2026-11-20 06:35:00 → SEA 2026-11-20 11:09:00; 1 stop(s) via DTW; 454 minutes. Local airport times.
    • DL1721: BUF 2026-11-20 06:35:00 → DTW 2026-11-20 07:52:00; layover at DTW: 63 minutes.
    • DL734: DTW 2026-11-20 08:55:00 → SEA 2026-11-20 11:09:00.

2026-11-27 → 2026-12-04 · $434.75

  • Southwest Airlines WN383 / WN3032: BUF 2026-11-27 18:55:00 → SEA 2026-11-27 23:35:00; 1 stop(s) via MDW; 460 minutes. Local airport times.
    • WN383: BUF 2026-11-27 18:55:00 → MDW 2026-11-27 19:45:00; layover at MDW: 60 minutes.
    • WN3032: MDW 2026-11-27 20:45:00 → SEA 2026-11-27 23:35:00.
  • Southwest Airlines WN1550 / WN1417: SEA 2026-12-04 06:30:00 → BUF 2026-12-04 16:00:00; 1 stop(s) via MDW; 390 minutes. Local airport times.
    • WN1550: SEA 2026-12-04 06:30:00 → MDW 2026-12-04 12:25:00; layover at MDW: 60 minutes.
    • WN1417: MDW 2026-12-04 13:25:00 → BUF 2026-12-04 16:00:00.

2026-11-27 → 2026-12-04 · $458.25

  • United Airlines UA5288 / UA2099: BUF 2026-11-27 06:30:00 → SEA 2026-11-27 12:19:00; 1 stop(s) via ORD; 529 minutes. Local airport times.
    • UA5288: BUF 2026-11-27 06:30:00 → ORD 2026-11-27 07:44:00; layover at ORD: 101 minutes.
    • UA2099: ORD 2026-11-27 09:25:00 → SEA 2026-11-27 12:19:00.
  • United Airlines UA1538 / UA3529: SEA 2026-12-04 23:25:00 → BUF 2026-12-05 10:08:00; 1 stop(s) via EWR; 463 minutes. Local airport times.
    • UA1538: SEA 2026-12-04 23:25:00 → EWR 2026-12-05 07:26:00; layover at EWR: 74 minutes.
    • UA3529: EWR 2026-12-05 08:40:00 → BUF 2026-12-05 10:08:00.

2026-11-27 → 2026-12-04 · $481.75

  • Delta Air Lines DL1721 / DL734: BUF 2026-11-27 06:35:00 → SEA 2026-11-27 11:09:00; 1 stop(s) via DTW; 454 minutes. Local airport times.
    • DL1721: BUF 2026-11-27 06:35:00 → DTW 2026-11-27 07:52:00; layover at DTW: 63 minutes.
    • DL734: DTW 2026-11-27 08:55:00 → SEA 2026-11-27 11:09:00.
  • Delta Air Lines DL533 / DL1872: SEA 2026-12-04 13:35:00 → BUF 2026-12-04 23:58:00; 1 stop(s) via DTW; 443 minutes. Local airport times.
    • DL533: SEA 2026-12-04 13:35:00 → DTW 2026-12-04 20:48:00; layover at DTW: 122 minutes.
    • DL1872: DTW 2026-12-04 22:50:00 → BUF 2026-12-04 23:58:00.

2026-11-20 → 2026-11-23 · $499.50

  • Southwest Airlines WN383 / WN3032: BUF 2026-11-20 18:55:00 → SEA 2026-11-20 23:35:00; 1 stop(s) via MDW; 460 minutes. Local airport times.
    • WN383: BUF 2026-11-20 18:55:00 → MDW 2026-11-20 19:45:00; layover at MDW: 60 minutes.
    • WN3032: MDW 2026-11-20 20:45:00 → SEA 2026-11-20 23:35:00.
  • Southwest Airlines WN1550 / WN1417: SEA 2026-11-23 06:30:00 → BUF 2026-11-23 16:00:00; 1 stop(s) via MDW; 390 minutes. Local airport times.
    • WN1550: SEA 2026-11-23 06:30:00 → MDW 2026-11-23 12:25:00; layover at MDW: 60 minutes.
    • WN1417: MDW 2026-11-23 13:25:00 → BUF 2026-11-23 16:00:00.

2026-11-20 · one way · $263.25

  • Southwest Airlines WN383 / WN3032: BUF 2026-11-20 18:55:00 → SEA 2026-11-20 23:35:00; 1 stop(s) via MDW; 460 minutes. Local airport times.
    • WN383: BUF 2026-11-20 18:55:00 → MDW 2026-11-20 19:45:00; layover at MDW: 60 minutes.
    • WN3032: MDW 2026-11-20 20:45:00 → SEA 2026-11-20 23:35:00.

2026-11-20 · one way · $276.75

  • United Airlines UA5288 / UA2099: BUF 2026-11-20 06:30:00 → SEA 2026-11-20 12:19:00; 1 stop(s) via ORD; 529 minutes. Local airport times.
    • UA5288: BUF 2026-11-20 06:30:00 → ORD 2026-11-20 07:44:00; layover at ORD: 101 minutes.
    • UA2099: ORD 2026-11-20 09:25:00 → SEA 2026-11-20 12:19:00.

2026-11-20 · one way · $290.25

  • Delta Air Lines DL8783 / DL881: BUF 2026-11-20 16:05:00 → SEA 2026-11-20 20:49:00; 1 stop(s) via MSP; 464 minutes. Local airport times.
    • DL8783: BUF 2026-11-20 16:05:00 → MSP 2026-11-20 17:32:00; layover at MSP: 74 minutes.
    • DL881: MSP 2026-11-20 18:46:00 → SEA 2026-11-20 20:49:00.

2026-11-27 → 2026-12-04 · $434.75

  • Southwest Airlines WN818 / WN3141: BUF 2026-11-27 16:55:00 → SEA 2026-11-27 22:50:00; 1 stop(s) via DEN; 535 minutes. Local airport times.
    • WN818: BUF 2026-11-27 16:55:00 → DEN 2026-11-27 18:35:00; layover at DEN: 125 minutes.
    • WN3141: DEN 2026-11-27 20:40:00 → SEA 2026-11-27 22:50:00.
  • Southwest Airlines WN1550 / WN1417: SEA 2026-12-04 06:30:00 → BUF 2026-12-04 16:00:00; 1 stop(s) via MDW; 390 minutes. Local airport times.
    • WN1550: SEA 2026-12-04 06:30:00 → MDW 2026-12-04 12:25:00; layover at MDW: 60 minutes.
    • WN1417: MDW 2026-12-04 13:25:00 → BUF 2026-12-04 16:00:00.

2026-11-27 → 2026-12-04 · $458.25

  • United Airlines UA1727 / UA2302: BUF 2026-11-27 08:17:00 → SEA 2026-11-27 13:35:00; 1 stop(s) via DEN; 498 minutes. Local airport times.
    • UA1727: BUF 2026-11-27 08:17:00 → DEN 2026-11-27 10:03:00; layover at DEN: 87 minutes.
    • UA2302: DEN 2026-11-27 11:30:00 → SEA 2026-11-27 13:35:00.
  • United Airlines UA1538 / UA3529: SEA 2026-12-04 23:25:00 → BUF 2026-12-05 10:08:00; 1 stop(s) via EWR; 463 minutes. Local airport times.
    • UA1538: SEA 2026-12-04 23:25:00 → EWR 2026-12-05 07:26:00; layover at EWR: 74 minutes.
    • UA3529: EWR 2026-12-05 08:40:00 → BUF 2026-12-05 10:08:00.

2026-11-27 → 2026-12-04 · $481.75

  • Delta Air Lines DL8783 / DL881: BUF 2026-11-27 16:05:00 → SEA 2026-11-27 20:49:00; 1 stop(s) via MSP; 464 minutes. Local airport times.
    • DL8783: BUF 2026-11-27 16:05:00 → MSP 2026-11-27 17:32:00; layover at MSP: 74 minutes.
    • DL881: MSP 2026-11-27 18:46:00 → SEA 2026-11-27 20:49:00.
  • Delta Air Lines DL533 / DL1872: SEA 2026-12-04 13:35:00 → BUF 2026-12-04 23:58:00; 1 stop(s) via DTW; 443 minutes. Local airport times.
    • DL533: SEA 2026-12-04 13:35:00 → DTW 2026-12-04 20:48:00; layover at DTW: 122 minutes.
    • DL1872: DTW 2026-12-04 22:50:00 → BUF 2026-12-04 23:58:00.

2026-11-20 → 2026-11-23 · $499.50

  • Southwest Airlines WN818 / WN3141: BUF 2026-11-20 16:55:00 → SEA 2026-11-20 22:50:00; 1 stop(s) via DEN; 535 minutes. Local airport times.
    • WN818: BUF 2026-11-20 16:55:00 → DEN 2026-11-20 18:35:00; layover at DEN: 125 minutes.
    • WN3141: DEN 2026-11-20 20:40:00 → SEA 2026-11-20 22:50:00.
  • Southwest Airlines WN1550 / WN1417: SEA 2026-11-23 06:30:00 → BUF 2026-11-23 16:00:00; 1 stop(s) via MDW; 390 minutes. Local airport times.
    • WN1550: SEA 2026-11-23 06:30:00 → MDW 2026-11-23 12:25:00; layover at MDW: 60 minutes.
    • WN1417: MDW 2026-11-23 13:25:00 → BUF 2026-11-23 16:00:00.

2026-11-20 → 2026-11-23 · $526.50

  • United Airlines UA1727 / UA2302: BUF 2026-11-20 08:17:00 → SEA 2026-11-20 13:35:00; 1 stop(s) via DEN; 498 minutes. Local airport times.
    • UA1727: BUF 2026-11-20 08:17:00 → DEN 2026-11-20 10:03:00; layover at DEN: 87 minutes.
    • UA2302: DEN 2026-11-20 11:30:00 → SEA 2026-11-20 13:35:00.
  • United Airlines UA1538 / UA3529: SEA 2026-11-23 23:25:00 → BUF 2026-11-24 10:08:00; 1 stop(s) via EWR; 463 minutes. Local airport times.
    • UA1538: SEA 2026-11-23 23:25:00 → EWR 2026-11-24 07:26:00; layover at EWR: 74 minutes.
    • UA3529: EWR 2026-11-24 08:40:00 → BUF 2026-11-24 10:08:00.

2026-11-20 → 2026-11-23 · $526.50

  • United Airlines UA5288 / UA2099: BUF 2026-11-20 06:30:00 → SEA 2026-11-20 12:19:00; 1 stop(s) via ORD; 529 minutes. Local airport times.
    • UA5288: BUF 2026-11-20 06:30:00 → ORD 2026-11-20 07:44:00; layover at ORD: 101 minutes.
    • UA2099: ORD 2026-11-20 09:25:00 → SEA 2026-11-20 12:19:00.
  • United Airlines UA1538 / UA3529: SEA 2026-11-23 23:25:00 → BUF 2026-11-24 10:08:00; 1 stop(s) via EWR; 463 minutes. Local airport times.
    • UA1538: SEA 2026-11-23 23:25:00 → EWR 2026-11-24 07:26:00; layover at EWR: 74 minutes.
    • UA3529: EWR 2026-11-24 08:40:00 → BUF 2026-11-24 10:08:00.

2026-11-20 → 2026-11-23 · $553.50

  • Delta Air Lines DL8783 / DL881: BUF 2026-11-20 16:05:00 → SEA 2026-11-20 20:49:00; 1 stop(s) via MSP; 464 minutes. Local airport times.
    • DL8783: BUF 2026-11-20 16:05:00 → MSP 2026-11-20 17:32:00; layover at MSP: 74 minutes.
    • DL881: MSP 2026-11-20 18:46:00 → SEA 2026-11-20 20:49:00.
  • Delta Air Lines DL533 / DL1872: SEA 2026-11-23 13:35:00 → BUF 2026-11-23 23:58:00; 1 stop(s) via DTW; 443 minutes. Local airport times.
    • DL533: SEA 2026-11-23 13:35:00 → DTW 2026-11-23 20:48:00; layover at DTW: 122 minutes.
    • DL1872: DTW 2026-11-23 22:50:00 → BUF 2026-11-23 23:58:00.

2026-11-20 → 2026-11-23 · $553.50

  • Delta Air Lines DL1721 / DL734: BUF 2026-11-20 06:35:00 → SEA 2026-11-20 11:09:00; 1 stop(s) via DTW; 454 minutes. Local airport times.
    • DL1721: BUF 2026-11-20 06:35:00 → DTW 2026-11-20 07:52:00; layover at DTW: 63 minutes.
    • DL734: DTW 2026-11-20 08:55:00 → SEA 2026-11-20 11:09:00.
  • Delta Air Lines DL533 / DL1872: SEA 2026-11-23 13:35:00 → BUF 2026-11-23 23:58:00; 1 stop(s) via DTW; 443 minutes. Local airport times.
    • DL533: SEA 2026-11-23 13:35:00 → DTW 2026-11-23 20:48:00; layover at DTW: 122 minutes.
    • DL1872: DTW 2026-11-23 22:50:00 → BUF 2026-11-23 23:58:00.

More dates for this route