Travel with Axel,
get the best price.

Austin → Seattle

Dec 21, 2026 · return Dec 26, 2026

AUS → SEA1 adulteconomyRound trip

12 flight options · 5 airlines

Nonstop flights

Mon, Dec 21 – Sat, Dec 26

Southwest Airlines
7:50 pmAUS
4h 45m
Nonstop
10:35 pmSEA
Southwest Airlines
8:30 amSEA
4h
Nonstop
2:30 pmAUS

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Sat, Dec 26

Alaska Airlines
8:30 amAUS
4h 38m
Nonstop
11:08 amSEA
Alaska Airlines
8:20 amSEA
4h 10m
Nonstop
2:30 pmAUS

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Sat, Dec 26

Delta Air Lines
6:08 amAUS
4h 52m
Nonstop
9:00 amSEA
Delta Air Lines
5:50 pmSEA
4h 9m
Nonstop
11:59 pmAUS

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Sat, Dec 26

Southwest Airlines
3:55 pmAUS
4h 40m
Nonstop
6:35 pmSEA
Southwest Airlines
8:30 amSEA
4h
Nonstop
2:30 pmAUS

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Sat, Dec 26

Alaska Airlines
7:07 pmAUS
4h 38m
Nonstop
9:45 pmSEA
Alaska Airlines
8:20 amSEA
4h 10m
Nonstop
2:30 pmAUS

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Sat, Dec 26

Delta Air Lines
6:10 pmAUS
4h 40m
Nonstop
8:50 pmSEA
Delta Air Lines
5:50 pmSEA
4h 9m
Nonstop
11:59 pmAUS

Round-trip total · 1 adult · Taxes included

One-stop flights

Mon, Dec 21 – Sat, Dec 26

American Airlines
3:00 pmAUS
7h 22m
DFW · 1h 41m
8:22 pmSEA
American Airlines
3:00 pmSEA
6h 59m
PHX · 1h 50m
11:59 pmAUS

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Sat, Dec 26

United Airlines
7:00 amAUS
7h 18m
SFO · 1h
12:18 pmSEA
United Airlines
11:59 pmSEA
6h 38m
IAH · 1h 19m
8:37 am+1AUS

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Sat, Dec 26

Southwest Airlines
5:40 amAUS
6h 55m
DAL · 1h 25m
10:35 amSEA
Southwest Airlines
8:30 amSEA
4h
Nonstop
2:30 pmAUS

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Sat, Dec 26

Southwest Airlines
1:35 pmAUS
7h 5m
SMF · 1h 20m
6:40 pmSEA
Southwest Airlines
8:30 amSEA
4h
Nonstop
2:30 pmAUS

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Sat, Dec 26

American Airlines
6:02 pmAUS
7h 13m
PHX · 1h 18m
11:15 pmSEA
American Airlines
3:00 pmSEA
6h 59m
PHX · 1h 50m
11:59 pmAUS

Round-trip total · 1 adult · Taxes included

Mon, Dec 21 – Sat, Dec 26

Alaska Airlines
7:15 amAUS
6h 54m
PDX · 1h 8m
12:09 pmSEA
Alaska Airlines
8:20 amSEA
4h 10m
Nonstop
2:30 pmAUS

Round-trip total · 1 adult · Taxes included

Make this trip yours

AUS ⇄ 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.
  • Not satisfied? Full refund.If you are unhappy with the experience for any reason, or simply change your mind, cancel within 24 hours of booking (departure 7+ days away) and we refund you in full. We stand by our product. 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

All dates for this routeNov 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)
2026-12-21 → 2026-12-26Southwest AirlinesWN2955 / WN4519$445.502026-10-29T00:47:15Z
2026-12-21 → 2026-12-26Alaska AirlinesAS224 / AS352$459.002026-10-29T00:47:15Z
2026-12-21 → 2026-12-26Delta Air LinesDL780 / DL848$486.002026-10-29T00:47:15Z
2026-12-21 → 2026-12-26American AirlinesAA3885 + AA1241 / AA2073 + AA1805$445.502026-10-29T00:47:15Z
2026-12-21 → 2026-12-26United AirlinesUA2177 + UA2192 / UA2211 + UA2083$459.002026-10-29T00:47:15Z
2026-12-21 → 2026-12-26Southwest AirlinesWN425 / WN4519$445.502026-10-29T00:47:15Z
2026-12-21 → 2026-12-26Alaska AirlinesAS339 / AS352$459.002026-10-29T00:47:15Z
2026-12-21 → 2026-12-26Delta Air LinesDL399 / DL848$486.002026-10-29T00:47:15Z
2026-12-21 → 2026-12-26Southwest AirlinesWN300 + WN534 / WN4519$432.002026-10-29T00:47:15Z
2026-12-21 → 2026-12-26Southwest AirlinesWN4794 + WN1586 / WN4519$432.002026-10-29T00:47:15Z
2026-12-21 → 2026-12-26American AirlinesAA1421 + AS612 / AA2073 + AA1805$445.502026-10-29T00:47:15Z
2026-12-21 → 2026-12-26Alaska AirlinesAS541 + AS3217 / AS352$445.502026-10-29T00:47:15Z

2026-12-21 → 2026-12-26 · $445.50

  • Southwest Airlines WN2955: AUS 2026-12-21 19:50:00 → SEA 2026-12-21 22:35:00; nonstop; 285 minutes. Local airport times.
  • Southwest Airlines WN4519: SEA 2026-12-26 08:30:00 → AUS 2026-12-26 14:30:00; nonstop; 240 minutes. Local airport times.

2026-12-21 → 2026-12-26 · $459.00

  • Alaska Airlines AS224: AUS 2026-12-21 08:30:00 → SEA 2026-12-21 11:08:00; nonstop; 278 minutes. Local airport times.
  • Alaska Airlines AS352: SEA 2026-12-26 08:20:00 → AUS 2026-12-26 14:30:00; nonstop; 250 minutes. Local airport times.

2026-12-21 → 2026-12-26 · $486.00

  • Delta Air Lines DL780: AUS 2026-12-21 06:08:00 → SEA 2026-12-21 09:00:00; nonstop; 292 minutes. Local airport times.
  • Delta Air Lines DL848: SEA 2026-12-26 17:50:00 → AUS 2026-12-26 23:59:00; nonstop; 249 minutes. Local airport times.

2026-12-21 → 2026-12-26 · $445.50

  • American Airlines AA3885 / AA1241: AUS 2026-12-21 15:00:00 → SEA 2026-12-21 20:22:00; 1 stop(s) via DFW; 442 minutes. Local airport times.
    • AA3885: AUS 2026-12-21 15:00:00 → DFW 2026-12-21 16:15:00; layover at DFW: 101 minutes.
    • AA1241: DFW 2026-12-21 17:56:00 → SEA 2026-12-21 20:22:00.
  • American Airlines AA2073 / AA1805: SEA 2026-12-26 15:00:00 → AUS 2026-12-26 23:59:00; 1 stop(s) via PHX; 419 minutes. Local airport times.
    • AA2073: SEA 2026-12-26 15:00:00 → PHX 2026-12-26 18:52:00; layover at PHX: 110 minutes.
    • AA1805: PHX 2026-12-26 20:42:00 → AUS 2026-12-26 23:59:00.

2026-12-21 → 2026-12-26 · $459.00

  • United Airlines UA2177 / UA2192: AUS 2026-12-21 07:00:00 → SEA 2026-12-21 12:18:00; 1 stop(s) via SFO; 438 minutes. Local airport times.
    • UA2177: AUS 2026-12-21 07:00:00 → SFO 2026-12-21 09:05:00; layover at SFO: 60 minutes.
    • UA2192: SFO 2026-12-21 10:05:00 → SEA 2026-12-21 12:18:00.
  • United Airlines UA2211 / UA2083: SEA 2026-12-26 23:59:00 → AUS 2026-12-27 08:37:00; 1 stop(s) via IAH; 398 minutes. Local airport times.
    • UA2211: SEA 2026-12-26 23:59:00 → IAH 2026-12-27 06:13:00; layover at IAH: 79 minutes.
    • UA2083: IAH 2026-12-27 07:32:00 → AUS 2026-12-27 08:37:00.

2026-12-21 → 2026-12-26 · $445.50

  • Southwest Airlines WN425: AUS 2026-12-21 15:55:00 → SEA 2026-12-21 18:35:00; nonstop; 280 minutes. Local airport times.
  • Southwest Airlines WN4519: SEA 2026-12-26 08:30:00 → AUS 2026-12-26 14:30:00; nonstop; 240 minutes. Local airport times.

2026-12-21 → 2026-12-26 · $459.00

  • Alaska Airlines AS339: AUS 2026-12-21 19:07:00 → SEA 2026-12-21 21:45:00; nonstop; 278 minutes. Local airport times.
  • Alaska Airlines AS352: SEA 2026-12-26 08:20:00 → AUS 2026-12-26 14:30:00; nonstop; 250 minutes. Local airport times.

2026-12-21 → 2026-12-26 · $486.00

  • Delta Air Lines DL399: AUS 2026-12-21 18:10:00 → SEA 2026-12-21 20:50:00; nonstop; 280 minutes. Local airport times.
  • Delta Air Lines DL848: SEA 2026-12-26 17:50:00 → AUS 2026-12-26 23:59:00; nonstop; 249 minutes. Local airport times.

2026-12-21 → 2026-12-26 · $432.00

  • Southwest Airlines WN300 / WN534: AUS 2026-12-21 05:40:00 → SEA 2026-12-21 10:35:00; 1 stop(s) via DAL; 415 minutes. Local airport times.
    • WN300: AUS 2026-12-21 05:40:00 → DAL 2026-12-21 06:45:00; layover at DAL: 85 minutes.
    • WN534: DAL 2026-12-21 08:10:00 → SEA 2026-12-21 10:35:00.
  • Southwest Airlines WN4519: SEA 2026-12-26 08:30:00 → AUS 2026-12-26 14:30:00; nonstop; 240 minutes. Local airport times.

2026-12-21 → 2026-12-26 · $432.00

  • Southwest Airlines WN4794 / WN1586: AUS 2026-12-21 13:35:00 → SEA 2026-12-21 18:40:00; 1 stop(s) via SMF; 425 minutes. Local airport times.
    • WN4794: AUS 2026-12-21 13:35:00 → SMF 2026-12-21 15:20:00; layover at SMF: 80 minutes.
    • WN1586: SMF 2026-12-21 16:40:00 → SEA 2026-12-21 18:40:00.
  • Southwest Airlines WN4519: SEA 2026-12-26 08:30:00 → AUS 2026-12-26 14:30:00; nonstop; 240 minutes. Local airport times.

2026-12-21 → 2026-12-26 · $445.50

  • American Airlines AA1421 / AS612: AUS 2026-12-21 18:02:00 → SEA 2026-12-21 23:15:00; 1 stop(s) via PHX; 433 minutes. Local airport times.
    • AA1421: AUS 2026-12-21 18:02:00 → PHX 2026-12-21 19:40:00; layover at PHX: 78 minutes.
    • AS612: PHX 2026-12-21 20:58:00 → SEA 2026-12-21 23:15:00.
  • American Airlines AA2073 / AA1805: SEA 2026-12-26 15:00:00 → AUS 2026-12-26 23:59:00; 1 stop(s) via PHX; 419 minutes. Local airport times.
    • AA2073: SEA 2026-12-26 15:00:00 → PHX 2026-12-26 18:52:00; layover at PHX: 110 minutes.
    • AA1805: PHX 2026-12-26 20:42:00 → AUS 2026-12-26 23:59:00.

2026-12-21 → 2026-12-26 · $445.50

  • Alaska Airlines AS541 / AS3217: AUS 2026-12-21 07:15:00 → SEA 2026-12-21 12:09:00; 1 stop(s) via PDX; 414 minutes. Local airport times.
    • AS541: AUS 2026-12-21 07:15:00 → PDX 2026-12-21 09:46:00; layover at PDX: 68 minutes.
    • AS3217: PDX 2026-12-21 10:54:00 → SEA 2026-12-21 12:09:00.
  • Alaska Airlines AS352: SEA 2026-12-26 08:20:00 → AUS 2026-12-26 14:30:00; nonstop; 250 minutes. Local airport times.

More dates for this route