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Denver → Seattle

Dec 2, 2026 · return Dec 4, 2026

DEN → SEA1 adulteconomyRound trip

16 flight options · 6 airlines

Nonstop flights

Wed, Dec 2 – Fri, Dec 4

Frontier Airlines
10:08 amDEN
3h 14m
Nonstop
12:22 pmSEA
Frontier Airlines
4:58 pmSEA
2h 48m
Nonstop
8:46 pmDEN

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Fri, Dec 4

Southwest Airlines
2:45 pmDEN
3h 5m
Nonstop
4:50 pmSEA
Southwest Airlines
1:35 pmSEA
2h 30m
Nonstop
5:05 pmDEN

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Fri, Dec 4

Alaska Airlines
6:37 pmDEN
3h 4m
Nonstop
8:41 pmSEA
Alaska Airlines
7:35 pmSEA
2h 40m
Nonstop
11:15 pmDEN

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Fri, Dec 4

United Airlines
4:10 pmDEN
3h 2m
Nonstop
6:12 pmSEA
United Airlines
5:00 amSEA
2h 41m
Nonstop
8:41 amDEN

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Fri, Dec 4

Delta Air Lines
6:00 amDEN
3h 18m
Nonstop
8:18 amSEA
Delta Air Lines
1:55 pmSEA
2h 45m
Nonstop
5:40 pmDEN

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Fri, Dec 4

Frontier Airlines
1:04 pmDEN
3h 8m
Nonstop
3:12 pmSEA
Frontier Airlines
4:58 pmSEA
2h 48m
Nonstop
8:46 pmDEN

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Fri, Dec 4

Southwest Airlines
8:50 amDEN
3h 10m
Nonstop
11:00 amSEA
Southwest Airlines
1:35 pmSEA
2h 30m
Nonstop
5:05 pmDEN

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Fri, Dec 4

Alaska Airlines
3:25 pmDEN
3h 2m
Nonstop
5:27 pmSEA
Alaska Airlines
7:35 pmSEA
2h 40m
Nonstop
11:15 pmDEN

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Fri, Dec 4

United Airlines
11:45 amDEN
3h 4m
Nonstop
1:49 pmSEA
United Airlines
5:00 amSEA
2h 41m
Nonstop
8:41 amDEN

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Fri, Dec 4

Delta Air Lines
6:33 pmDEN
3h 7m
Nonstop
8:40 pmSEA
Delta Air Lines
1:55 pmSEA
2h 45m
Nonstop
5:40 pmDEN

Round-trip total · 1 adult · Taxes included

One-stop flights

Wed, Dec 2 – Fri, Dec 4

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

Wed, Dec 2 – Fri, Dec 4

Frontier Airlines
6:25 amDEN
7h 2m
LAS · 1h 52m
12:27 pmSEA
Frontier Airlines
4:58 pmSEA
2h 48m
Nonstop
8:46 pmDEN

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Fri, Dec 4

Southwest Airlines
7:30 amDEN
6h 30m
LAS · 1h 30m
1:00 pmSEA
Southwest Airlines
1:35 pmSEA
2h 30m
Nonstop
5:05 pmDEN

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Fri, Dec 4

Southwest Airlines
1:55 pmDEN
5h 45m
SMF · 1h 10m
6:40 pmSEA
Southwest Airlines
1:35 pmSEA
2h 30m
Nonstop
5:05 pmDEN

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Fri, Dec 4

Alaska Airlines
7:40 amDEN
5h 29m
PDX · 1h 15m
12:09 pmSEA
Alaska Airlines
7:35 pmSEA
2h 40m
Nonstop
11:15 pmDEN

Round-trip total · 1 adult · Taxes included

Wed, Dec 2 – Fri, Dec 4

United Airlines
3:53 pmDEN
7h 4m
YVR · 2h 46m
9:57 pmSEA
United Airlines
5:00 amSEA
2h 41m
Nonstop
8:41 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)
2026-12-02 → 2026-12-04Frontier AirlinesF9605 / F91916$165.002026-10-29T01:05:09Z
2026-12-02 → 2026-12-04Southwest AirlinesWN2174 / WN3823$270.002026-10-29T01:05:09Z
2026-12-02 → 2026-12-04Alaska AirlinesAS421 / AS310$280.002026-10-29T01:05:09Z
2026-12-02 → 2026-12-04United AirlinesUA2013 / UA2601$290.002026-10-29T01:05:09Z
2026-12-02 → 2026-12-04Delta Air LinesDL1731 / DL2543$290.002026-10-29T01:05:09Z
2026-12-02 → 2026-12-04Air CanadaAC575 + AC8804 / AC8803 + UA2470$395.002026-10-29T01:05:09Z
2026-12-02 → 2026-12-04Frontier AirlinesF91175 / F91916$165.002026-10-29T01:05:09Z
2026-12-02 → 2026-12-04Southwest AirlinesWN1543 / WN3823$270.002026-10-29T01:05:09Z
2026-12-02 → 2026-12-04Alaska AirlinesAS493 / AS310$280.002026-10-29T01:05:09Z
2026-12-02 → 2026-12-04United AirlinesUA310 / UA2601$290.002026-10-29T01:05:09Z
2026-12-02 → 2026-12-04Delta Air LinesDL2543 / DL2543$290.002026-10-29T01:05:09Z
2026-12-02 → 2026-12-04Frontier AirlinesF92015 + F92407 / F91916$182.502026-10-29T01:05:09Z
2026-12-02 → 2026-12-04Southwest AirlinesWN1660 + WN948 / WN3823$285.002026-10-29T01:05:09Z
2026-12-02 → 2026-12-04Southwest AirlinesWN3148 + WN1586 / WN3823$285.002026-10-29T01:05:09Z
2026-12-02 → 2026-12-04Alaska AirlinesAS686 + AS3217 / AS310$295.002026-10-29T01:05:09Z
2026-12-02 → 2026-12-04United AirlinesUA1086 + AC8810 / UA2601$310.002026-10-29T01:05:09Z

2026-12-02 → 2026-12-04 · $165.00

  • Frontier Airlines F9605: DEN 2026-12-02 10:08:00 → SEA 2026-12-02 12:22:00; nonstop; 194 minutes. Local airport times.
  • Frontier Airlines F91916: SEA 2026-12-04 16:58:00 → DEN 2026-12-04 20:46:00; nonstop; 168 minutes. Local airport times.

2026-12-02 → 2026-12-04 · $270.00

  • Southwest Airlines WN2174: DEN 2026-12-02 14:45:00 → SEA 2026-12-02 16:50:00; nonstop; 185 minutes. Local airport times.
  • Southwest Airlines WN3823: SEA 2026-12-04 13:35:00 → DEN 2026-12-04 17:05:00; nonstop; 150 minutes. Local airport times.

2026-12-02 → 2026-12-04 · $280.00

  • Alaska Airlines AS421: DEN 2026-12-02 18:37:00 → SEA 2026-12-02 20:41:00; nonstop; 184 minutes. Local airport times.
  • Alaska Airlines AS310: SEA 2026-12-04 19:35:00 → DEN 2026-12-04 23:15:00; nonstop; 160 minutes. Local airport times.

2026-12-02 → 2026-12-04 · $290.00

  • United Airlines UA2013: DEN 2026-12-02 16:10:00 → SEA 2026-12-02 18:12:00; nonstop; 182 minutes. Local airport times.
  • United Airlines UA2601: SEA 2026-12-04 05:00:00 → DEN 2026-12-04 08:41:00; nonstop; 161 minutes. Local airport times.

2026-12-02 → 2026-12-04 · $290.00

  • Delta Air Lines DL1731: DEN 2026-12-02 06:00:00 → SEA 2026-12-02 08:18:00; nonstop; 198 minutes. Local airport times.
  • Delta Air Lines DL2543: SEA 2026-12-04 13:55:00 → DEN 2026-12-04 17:40:00; nonstop; 165 minutes. Local airport times.

2026-12-02 → 2026-12-04 · $395.00

  • Air Canada AC575 / AC8804: DEN 2026-12-02 08:15:00 → SEA 2026-12-02 14:32:00; 1 stop(s) via YVR; 437 minutes. Local airport times.
    • AC575: DEN 2026-12-02 08:15:00 → YVR 2026-12-02 11:25:00; layover at YVR: 185 minutes.
    • AC8804: YVR 2026-12-02 14:30:00 → SEA 2026-12-02 14:32:00.
  • Air Canada AC8803 / UA2470: SEA 2026-12-04 10:10:00 → DEN 2026-12-04 16:27:00; 1 stop(s) via YVR; 317 minutes. Local airport times.
    • AC8803: SEA 2026-12-04 10:10:00 → YVR 2026-12-04 12:21:00; layover at YVR: 75 minutes.
    • UA2470: YVR 2026-12-04 13:36:00 → DEN 2026-12-04 16:27:00.

2026-12-02 → 2026-12-04 · $165.00

  • Frontier Airlines F91175: DEN 2026-12-02 13:04:00 → SEA 2026-12-02 15:12:00; nonstop; 188 minutes. Local airport times.
  • Frontier Airlines F91916: SEA 2026-12-04 16:58:00 → DEN 2026-12-04 20:46:00; nonstop; 168 minutes. Local airport times.

2026-12-02 → 2026-12-04 · $270.00

  • Southwest Airlines WN1543: DEN 2026-12-02 08:50:00 → SEA 2026-12-02 11:00:00; nonstop; 190 minutes. Local airport times.
  • Southwest Airlines WN3823: SEA 2026-12-04 13:35:00 → DEN 2026-12-04 17:05:00; nonstop; 150 minutes. Local airport times.

2026-12-02 → 2026-12-04 · $280.00

  • Alaska Airlines AS493: DEN 2026-12-02 15:25:00 → SEA 2026-12-02 17:27:00; nonstop; 182 minutes. Local airport times.
  • Alaska Airlines AS310: SEA 2026-12-04 19:35:00 → DEN 2026-12-04 23:15:00; nonstop; 160 minutes. Local airport times.

2026-12-02 → 2026-12-04 · $290.00

  • United Airlines UA310: DEN 2026-12-02 11:45:00 → SEA 2026-12-02 13:49:00; nonstop; 184 minutes. Local airport times.
  • United Airlines UA2601: SEA 2026-12-04 05:00:00 → DEN 2026-12-04 08:41:00; nonstop; 161 minutes. Local airport times.

2026-12-02 → 2026-12-04 · $290.00

  • Delta Air Lines DL2543: DEN 2026-12-02 18:33:00 → SEA 2026-12-02 20:40:00; nonstop; 187 minutes. Local airport times.
  • Delta Air Lines DL2543: SEA 2026-12-04 13:55:00 → DEN 2026-12-04 17:40:00; nonstop; 165 minutes. Local airport times.

2026-12-02 → 2026-12-04 · $182.50

  • Frontier Airlines F92015 / F92407: DEN 2026-12-02 06:25:00 → SEA 2026-12-02 12:27:00; 1 stop(s) via LAS; 422 minutes. Local airport times.
    • F92015: DEN 2026-12-02 06:25:00 → LAS 2026-12-02 07:37:00; layover at LAS: 112 minutes.
    • F92407: LAS 2026-12-02 09:29:00 → SEA 2026-12-02 12:27:00.
  • Frontier Airlines F91916: SEA 2026-12-04 16:58:00 → DEN 2026-12-04 20:46:00; nonstop; 168 minutes. Local airport times.

2026-12-02 → 2026-12-04 · $285.00

  • Southwest Airlines WN1660 / WN948: DEN 2026-12-02 07:30:00 → SEA 2026-12-02 13:00:00; 1 stop(s) via LAS; 390 minutes. Local airport times.
    • WN1660: DEN 2026-12-02 07:30:00 → LAS 2026-12-02 08:30:00; layover at LAS: 90 minutes.
    • WN948: LAS 2026-12-02 10:00:00 → SEA 2026-12-02 13:00:00.
  • Southwest Airlines WN3823: SEA 2026-12-04 13:35:00 → DEN 2026-12-04 17:05:00; nonstop; 150 minutes. Local airport times.

2026-12-02 → 2026-12-04 · $285.00

  • Southwest Airlines WN3148 / WN1586: DEN 2026-12-02 13:55:00 → SEA 2026-12-02 18:40:00; 1 stop(s) via SMF; 345 minutes. Local airport times.
    • WN3148: DEN 2026-12-02 13:55:00 → SMF 2026-12-02 15:30:00; layover at SMF: 70 minutes.
    • WN1586: SMF 2026-12-02 16:40:00 → SEA 2026-12-02 18:40:00.
  • Southwest Airlines WN3823: SEA 2026-12-04 13:35:00 → DEN 2026-12-04 17:05:00; nonstop; 150 minutes. Local airport times.

2026-12-02 → 2026-12-04 · $295.00

  • Alaska Airlines AS686 / AS3217: DEN 2026-12-02 07:40:00 → SEA 2026-12-02 12:09:00; 1 stop(s) via PDX; 329 minutes. Local airport times.
    • AS686: DEN 2026-12-02 07:40:00 → PDX 2026-12-02 09:39:00; layover at PDX: 75 minutes.
    • AS3217: PDX 2026-12-02 10:54:00 → SEA 2026-12-02 12:09:00.
  • Alaska Airlines AS310: SEA 2026-12-04 19:35:00 → DEN 2026-12-04 23:15:00; nonstop; 160 minutes. Local airport times.

2026-12-02 → 2026-12-04 · $310.00

  • United Airlines UA1086 / AC8810: DEN 2026-12-02 15:53:00 → SEA 2026-12-02 21:57:00; 1 stop(s) via YVR; 424 minutes. Local airport times.
    • UA1086: DEN 2026-12-02 15:53:00 → YVR 2026-12-02 19:04:00; layover at YVR: 166 minutes.
    • AC8810: YVR 2026-12-02 21:50:00 → SEA 2026-12-02 21:57:00.
  • United Airlines UA2601: SEA 2026-12-04 05:00:00 → DEN 2026-12-04 08:41:00; nonstop; 161 minutes. Local airport times.

More dates for this route