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Denver → Seattle

Dec 13, 2026 · return Dec 23, 2026

DEN → SEA1 adulteconomyRound trip

14 flight options · 6 airlines

Nonstop flights

Sun, Dec 13 – Wed, Dec 23

Frontier Airlines
1:14 pmDEN
3h 8m
Nonstop
3:22 pmSEA
Frontier Airlines
4:37 pmSEA
2h 48m
Nonstop
8:25 pmDEN

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Wed, Dec 23

Alaska Airlines
7:03 amDEN
3h 4m
Nonstop
9:07 amSEA
Alaska Airlines
6:59 pmSEA
2h 39m
Nonstop
10:38 pmDEN

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Wed, Dec 23

United Airlines
9:10 pmDEN
3h 6m
Nonstop
11:16 pmSEA
United Airlines
5:05 amSEA
2h 37m
Nonstop
8:42 amDEN

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Wed, Dec 23

Delta Air Lines
1:14 pmDEN
3h 11m
Nonstop
3:25 pmSEA
Delta Air Lines
1:52 pmSEA
2h 45m
Nonstop
5:37 pmDEN

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Wed, Dec 23

Frontier Airlines
10:08 amDEN
3h 14m
Nonstop
12:22 pmSEA
Frontier Airlines
4:37 pmSEA
2h 48m
Nonstop
8:25 pmDEN

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Wed, Dec 23

Alaska Airlines
6:37 pmDEN
3h 4m
Nonstop
8:41 pmSEA
Alaska Airlines
6:59 pmSEA
2h 39m
Nonstop
10:38 pmDEN

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Wed, Dec 23

Delta Air Lines
6:33 pmDEN
3h 7m
Nonstop
8:40 pmSEA
Delta Air Lines
1:52 pmSEA
2h 45m
Nonstop
5:37 pmDEN

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Wed, Dec 23

United Airlines
11:30 amDEN
3h 5m
Nonstop
1:35 pmSEA
United Airlines
5:05 amSEA
2h 37m
Nonstop
8:42 amDEN

Round-trip total · 1 adult · Taxes included

One-stop flights

Sun, Dec 13 – Wed, Dec 23

Southwest Airlines
8:30 amDEN
3h 10m
Nonstop
10:40 amSEA
Southwest Airlines
5:15 amSEA
6h 15m
SMF · 2h 10m
12:30 pmDEN

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Wed, Dec 23

Air Canada
8:15 amDEN
7h 17m
YVR · 3h 5m
2:32 pmSEA
Air Canada
10:10 amSEA
5h 17m
YVR · 1h 15m
4:27 pmDEN

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Wed, Dec 23

Alaska Airlines
7:40 amDEN
5h 29m
PDX · 1h 15m
12:09 pmSEA
Alaska Airlines
6:59 pmSEA
2h 39m
Nonstop
10:38 pmDEN

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Wed, Dec 23

Southwest Airlines
7:30 amDEN
6h 30m
LAS · 1h 30m
1:00 pmSEA
Southwest Airlines
5:15 amSEA
6h 15m
SMF · 2h 10m
12:30 pmDEN

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Wed, Dec 23

Southwest Airlines
1:55 pmDEN
5h 45m
SMF · 1h 10m
6:40 pmSEA
Southwest Airlines
5:15 amSEA
6h 15m
SMF · 2h 10m
12:30 pmDEN

Round-trip total · 1 adult · Taxes included

Sun, Dec 13 – Wed, Dec 23

United Airlines
3:53 pmDEN
7h 4m
YVR · 2h 46m
9:57 pmSEA
United Airlines
5:05 amSEA
2h 37m
Nonstop
8:42 amDEN

Round-trip total · 1 adult · Taxes included

Make this trip yours

DEN ⇄ SEA

Economy

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

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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)
2026-12-13 → 2026-12-23Frontier AirlinesF94545 / F91916$198.002026-10-29T01:05:09Z
2026-12-13 → 2026-12-23Alaska AirlinesAS317 / AS310$336.002026-10-29T01:05:09Z
2026-12-13 → 2026-12-23United AirlinesUA2651 / UA757$348.002026-10-29T01:05:09Z
2026-12-13 → 2026-12-23Delta Air LinesDL2740 / DL2759$348.002026-10-29T01:05:09Z
2026-12-13 → 2026-12-23Southwest AirlinesWN1788 / WN3833 + WN2542$345.002026-10-29T01:05:09Z
2026-12-13 → 2026-12-23Air CanadaAC575 + AC8804 / AC8803 + UA2470$474.002026-10-29T01:05:09Z
2026-12-13 → 2026-12-23Frontier AirlinesF9605 / F91916$198.002026-10-29T01:05:09Z
2026-12-13 → 2026-12-23Alaska AirlinesAS421 / AS310$336.002026-10-29T01:05:09Z
2026-12-13 → 2026-12-23Delta Air LinesDL2543 / DL2759$348.002026-10-29T01:05:09Z
2026-12-13 → 2026-12-23United AirlinesUA2302 / UA757$348.002026-10-29T01:05:09Z
2026-12-13 → 2026-12-23Alaska AirlinesAS686 + AS3217 / AS310$351.002026-10-29T01:05:09Z
2026-12-13 → 2026-12-23Southwest AirlinesWN1660 + WN948 / WN3833 + WN2542$360.002026-10-29T01:05:09Z
2026-12-13 → 2026-12-23Southwest AirlinesWN3148 + WN1586 / WN3833 + WN2542$360.002026-10-29T01:05:09Z
2026-12-13 → 2026-12-23United AirlinesUA1086 + AC8810 / UA757$368.002026-10-29T01:05:09Z

2026-12-13 → 2026-12-23 · $198.00

  • Frontier Airlines F94545: DEN 2026-12-13 13:14:00 → SEA 2026-12-13 15:22:00; nonstop; 188 minutes. Local airport times.
  • Frontier Airlines F91916: SEA 2026-12-23 16:37:00 → DEN 2026-12-23 20:25:00; nonstop; 168 minutes. Local airport times.

2026-12-13 → 2026-12-23 · $336.00

  • Alaska Airlines AS317: DEN 2026-12-13 07:03:00 → SEA 2026-12-13 09:07:00; nonstop; 184 minutes. Local airport times.
  • Alaska Airlines AS310: SEA 2026-12-23 18:59:00 → DEN 2026-12-23 22:38:00; nonstop; 159 minutes. Local airport times.

2026-12-13 → 2026-12-23 · $348.00

  • United Airlines UA2651: DEN 2026-12-13 21:10:00 → SEA 2026-12-13 23:16:00; nonstop; 186 minutes. Local airport times.
  • United Airlines UA757: SEA 2026-12-23 05:05:00 → DEN 2026-12-23 08:42:00; nonstop; 157 minutes. Local airport times.

2026-12-13 → 2026-12-23 · $348.00

  • Delta Air Lines DL2740: DEN 2026-12-13 13:14:00 → SEA 2026-12-13 15:25:00; nonstop; 191 minutes. Local airport times.
  • Delta Air Lines DL2759: SEA 2026-12-23 13:52:00 → DEN 2026-12-23 17:37:00; nonstop; 165 minutes. Local airport times.

2026-12-13 → 2026-12-23 · $345.00

  • Southwest Airlines WN1788: DEN 2026-12-13 08:30:00 → SEA 2026-12-13 10:40:00; nonstop; 190 minutes. Local airport times.
  • Southwest Airlines WN3833 / WN2542: SEA 2026-12-23 05:15:00 → DEN 2026-12-23 12:30:00; 1 stop(s) via SMF; 375 minutes. Local airport times.
    • WN3833: SEA 2026-12-23 05:15:00 → SMF 2026-12-23 07:05:00; layover at SMF: 130 minutes.
    • WN2542: SMF 2026-12-23 09:15:00 → DEN 2026-12-23 12:30:00.

2026-12-13 → 2026-12-23 · $474.00

  • Air Canada AC575 / AC8804: DEN 2026-12-13 08:15:00 → SEA 2026-12-13 14:32:00; 1 stop(s) via YVR; 437 minutes. Local airport times.
    • AC575: DEN 2026-12-13 08:15:00 → YVR 2026-12-13 11:25:00; layover at YVR: 185 minutes.
    • AC8804: YVR 2026-12-13 14:30:00 → SEA 2026-12-13 14:32:00.
  • Air Canada AC8803 / UA2470: SEA 2026-12-23 10:10:00 → DEN 2026-12-23 16:27:00; 1 stop(s) via YVR; 317 minutes. Local airport times.
    • AC8803: SEA 2026-12-23 10:10:00 → YVR 2026-12-23 12:21:00; layover at YVR: 75 minutes.
    • UA2470: YVR 2026-12-23 13:36:00 → DEN 2026-12-23 16:27:00.

2026-12-13 → 2026-12-23 · $198.00

  • Frontier Airlines F9605: DEN 2026-12-13 10:08:00 → SEA 2026-12-13 12:22:00; nonstop; 194 minutes. Local airport times.
  • Frontier Airlines F91916: SEA 2026-12-23 16:37:00 → DEN 2026-12-23 20:25:00; nonstop; 168 minutes. Local airport times.

2026-12-13 → 2026-12-23 · $336.00

  • Alaska Airlines AS421: DEN 2026-12-13 18:37:00 → SEA 2026-12-13 20:41:00; nonstop; 184 minutes. Local airport times.
  • Alaska Airlines AS310: SEA 2026-12-23 18:59:00 → DEN 2026-12-23 22:38:00; nonstop; 159 minutes. Local airport times.

2026-12-13 → 2026-12-23 · $348.00

  • Delta Air Lines DL2543: DEN 2026-12-13 18:33:00 → SEA 2026-12-13 20:40:00; nonstop; 187 minutes. Local airport times.
  • Delta Air Lines DL2759: SEA 2026-12-23 13:52:00 → DEN 2026-12-23 17:37:00; nonstop; 165 minutes. Local airport times.

2026-12-13 → 2026-12-23 · $348.00

  • United Airlines UA2302: DEN 2026-12-13 11:30:00 → SEA 2026-12-13 13:35:00; nonstop; 185 minutes. Local airport times.
  • United Airlines UA757: SEA 2026-12-23 05:05:00 → DEN 2026-12-23 08:42:00; nonstop; 157 minutes. Local airport times.

2026-12-13 → 2026-12-23 · $351.00

  • Alaska Airlines AS686 / AS3217: DEN 2026-12-13 07:40:00 → SEA 2026-12-13 12:09:00; 1 stop(s) via PDX; 329 minutes. Local airport times.
    • AS686: DEN 2026-12-13 07:40:00 → PDX 2026-12-13 09:39:00; layover at PDX: 75 minutes.
    • AS3217: PDX 2026-12-13 10:54:00 → SEA 2026-12-13 12:09:00.
  • Alaska Airlines AS310: SEA 2026-12-23 18:59:00 → DEN 2026-12-23 22:38:00; nonstop; 159 minutes. Local airport times.

2026-12-13 → 2026-12-23 · $360.00

  • Southwest Airlines WN1660 / WN948: DEN 2026-12-13 07:30:00 → SEA 2026-12-13 13:00:00; 1 stop(s) via LAS; 390 minutes. Local airport times.
    • WN1660: DEN 2026-12-13 07:30:00 → LAS 2026-12-13 08:30:00; layover at LAS: 90 minutes.
    • WN948: LAS 2026-12-13 10:00:00 → SEA 2026-12-13 13:00:00.
  • Southwest Airlines WN3833 / WN2542: SEA 2026-12-23 05:15:00 → DEN 2026-12-23 12:30:00; 1 stop(s) via SMF; 375 minutes. Local airport times.
    • WN3833: SEA 2026-12-23 05:15:00 → SMF 2026-12-23 07:05:00; layover at SMF: 130 minutes.
    • WN2542: SMF 2026-12-23 09:15:00 → DEN 2026-12-23 12:30:00.

2026-12-13 → 2026-12-23 · $360.00

  • Southwest Airlines WN3148 / WN1586: DEN 2026-12-13 13:55:00 → SEA 2026-12-13 18:40:00; 1 stop(s) via SMF; 345 minutes. Local airport times.
    • WN3148: DEN 2026-12-13 13:55:00 → SMF 2026-12-13 15:30:00; layover at SMF: 70 minutes.
    • WN1586: SMF 2026-12-13 16:40:00 → SEA 2026-12-13 18:40:00.
  • Southwest Airlines WN3833 / WN2542: SEA 2026-12-23 05:15:00 → DEN 2026-12-23 12:30:00; 1 stop(s) via SMF; 375 minutes. Local airport times.
    • WN3833: SEA 2026-12-23 05:15:00 → SMF 2026-12-23 07:05:00; layover at SMF: 130 minutes.
    • WN2542: SMF 2026-12-23 09:15:00 → DEN 2026-12-23 12:30:00.

2026-12-13 → 2026-12-23 · $368.00

  • United Airlines UA1086 / AC8810: DEN 2026-12-13 15:53:00 → SEA 2026-12-13 21:57:00; 1 stop(s) via YVR; 424 minutes. Local airport times.
    • UA1086: DEN 2026-12-13 15:53:00 → YVR 2026-12-13 19:04:00; layover at YVR: 166 minutes.
    • AC8810: YVR 2026-12-13 21:50:00 → SEA 2026-12-13 21:57:00.
  • United Airlines UA757: SEA 2026-12-23 05:05:00 → DEN 2026-12-23 08:42:00; nonstop; 157 minutes. Local airport times.

More dates for this route