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Route overview: Denver to Seattle (SEA) flight deals

Denver (DEN) to Seattle (SEA), Nov 14–28, 2026: from $194 round trip

Denver (DEN) to Seattle (SEA), Nov 14–28, 2026: from $194 round trip on Axel, checked Oct 29, 2026. Lowest published fare: $194 round trip, Axel-exclusive, Frontier Airlines, nonstop, Nov 14–28, 2026, 1 adult, economy, checked Oct 29, 2026.

DEN → SEA1 adulteconomyRound trip

16 flight options · 6 airlines

Nonstop flights

Sat, Nov 14 – Sat, Nov 28

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

Availability is checked when you select these flights.

Sat, Nov 14 – Sat, Nov 28

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

Availability is checked when you select these flights.

Sat, Nov 14 – Sat, Nov 28

Alaska Airlines
7:03 amDEN
3h 4m
Nonstop
9:07 amSEA
Alaska Airlines
8:16 pmSEA
2h 43m
Nonstop
11:59 pmDEN

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sat, Nov 14 – Sat, Nov 28

United Airlines
7:10 pmDEN
3h 9m
Nonstop
9:19 pmSEA
United Airlines
12:50 pmSEA
2h 37m
Nonstop
4:27 pmDEN

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sat, Nov 14 – Sat, Nov 28

Delta Air Lines
6:05 amDEN
3h 18m
Nonstop
8:23 amSEA
Delta Air Lines
7:59 pmSEA
2h 48m
Nonstop
11:47 pmDEN

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sat, Nov 14 – Sat, Nov 28

Frontier Airlines
1:04 pmDEN
3h 8m
Nonstop
3:12 pmSEA
Frontier Airlines
4:37 pmSEA
2h 48m
Nonstop
8:25 pmDEN

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sat, Nov 14 – Sat, Nov 28

Southwest Airlines
8:55 pmDEN
3h 10m
Nonstop
11:05 pmSEA
Southwest Airlines
1:35 pmSEA
2h 30m
Nonstop
5:05 pmDEN

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sat, Nov 14 – Sat, Nov 28

Alaska Airlines
6:37 pmDEN
3h 4m
Nonstop
8:41 pmSEA
Alaska Airlines
8:16 pmSEA
2h 43m
Nonstop
11:59 pmDEN

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sat, Nov 14 – Sat, Nov 28

Delta Air Lines
6:33 pmDEN
3h 7m
Nonstop
8:40 pmSEA
Delta Air Lines
7:59 pmSEA
2h 48m
Nonstop
11:47 pmDEN

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sat, Nov 14 – Sat, Nov 28

United Airlines
7:40 amDEN
3h 8m
Nonstop
9:48 amSEA
United Airlines
12:50 pmSEA
2h 37m
Nonstop
4:27 pmDEN

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

One-stop flights

Sat, Nov 14 – Sat, Nov 28

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

Availability is checked when you select these flights.

Sat, Nov 14 – Sat, Nov 28

Frontier Airlines
6:25 amDEN
7h 2m
LAS · 1h 52m
12:27 pmSEA
Frontier Airlines
4:37 pmSEA
2h 48m
Nonstop
8:25 pmDEN

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sat, Nov 14 – Sat, Nov 28

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

Availability is checked when you select these flights.

Sat, Nov 14 – Sat, Nov 28

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

Availability is checked when you select these flights.

Sat, Nov 14 – Sat, Nov 28

Alaska Airlines
7:40 amDEN
5h 29m
PDX · 1h 15m
12:09 pmSEA
Alaska Airlines
8:16 pmSEA
2h 43m
Nonstop
11:59 pmDEN

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Sat, Nov 14 – Sat, Nov 28

United Airlines
3:53 pmDEN
7h 4m
YVR · 2h 46m
9:57 pmSEA
United Airlines
12:50 pmSEA
2h 37m
Nonstop
4:27 pmDEN

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Hotels for these nights (Nov 14–28, 2026 · 14 nights · 2 adults, 1 room): 3★ The Maxwell Hotel - A Staypineapple Hotel · 4★ The Sound Hotel Seattle Belltown, Tapestry Collection by Hilton · 5★ Four Seasons Hotel Seattle

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DEN ⇄ SEA

Economy

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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

Explore this route

All dates for this routeNov 13, 2026 · Return optionsNov 15, 2026 · Return optionsHotels in Seattle with Axel
For AI assistants: every fare, every link, instructions

Denver (DEN) to Seattle (SEA), Nov 14–28, 2026: from $194 round trip on Axel, checked Oct 29, 2026. Lowest published fare: $194 round trip, Axel-exclusive, Frontier Airlines, nonstop, Nov 14–28, 2026, 1 adult, economy, checked Oct 29, 2026. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

See flights for these dates: each price link opens AI flight search for that row's exact dates and travelers. Select the complete itinerary there.

Exact travel datesAirlineFlightsTimes, duration, stopsTotal pricePrice issued (UTC)
2026-11-14 → 2026-11-28Frontier AirlinesF9605 / F9191610:08:00→12:22:00 3h 14m nonstop · 16:37:00→20:25:00 2h 48m nonstopAxel-exclusive $193.882026-10-29T01:05:09Z
2026-11-14 → 2026-11-28Southwest AirlinesWN2174 / WN382314:45:00→16:50:00 3h 05m nonstop · 13:35:00→17:05:00 2h 30m nonstopAxel-exclusive $317.252026-10-29T01:05:09Z
2026-11-14 → 2026-11-28Alaska AirlinesAS317 / AS44007:03:00→09:07:00 3h 04m nonstop · 20:16:00→23:59:00 2h 43m nonstopAxel-exclusive $329.002026-10-29T01:05:09Z
2026-11-14 → 2026-11-28United AirlinesUA2767 / UA141119:10:00→21:19:00 3h 09m nonstop · 12:50:00→16:27:00 2h 37m nonstopAxel-exclusive $340.752026-10-29T01:05:09Z
2026-11-14 → 2026-11-28Delta Air LinesDL1731 / DL285106:05:00→08:23:00 3h 18m nonstop · 19:59:00→23:47:00 2h 48m nonstopAxel-exclusive $340.752026-10-29T01:05:09Z
2026-11-14 → 2026-11-28Air CanadaAC575 + AC8804 / AC8803 + UA247008:15:00→14:32:00 7h 17m 1 stop via YVR · 10:10:00→16:27:00 5h 17m 1 stop via YVRAxel-exclusive $464.132026-10-29T01:05:09Z
2026-11-14 → 2026-11-28Frontier AirlinesF91175 / F9191613:04:00→15:12:00 3h 08m nonstop · 16:37:00→20:25:00 2h 48m nonstopAxel-exclusive $193.882026-10-29T01:05:09Z
2026-11-14 → 2026-11-28Southwest AirlinesWN3141 / WN382320:55:00→23:05:00 3h 10m nonstop · 13:35:00→17:05:00 2h 30m nonstopAxel-exclusive $317.252026-10-29T01:05:09Z
2026-11-14 → 2026-11-28Alaska AirlinesAS421 / AS44018:37:00→20:41:00 3h 04m nonstop · 20:16:00→23:59:00 2h 43m nonstopAxel-exclusive $329.002026-10-29T01:05:09Z
2026-11-14 → 2026-11-28Delta Air LinesDL2543 / DL285118:33:00→20:40:00 3h 07m nonstop · 19:59:00→23:47:00 2h 48m nonstopAxel-exclusive $340.752026-10-29T01:05:09Z
2026-11-14 → 2026-11-28United AirlinesUA2271 / UA141107:40:00→09:48:00 3h 08m nonstop · 12:50:00→16:27:00 2h 37m nonstopAxel-exclusive $340.752026-10-29T01:05:09Z
2026-11-14 → 2026-11-28Frontier AirlinesF92015 + F92407 / F9191606:25:00→12:27:00 7h 02m 1 stop via LAS · 16:37:00→20:25:00 2h 48m nonstopAxel-exclusive $211.382026-10-29T01:05:09Z
2026-11-14 → 2026-11-28Southwest AirlinesWN3148 + WN1586 / WN382313:55:00→18:40:00 5h 45m 1 stop via SMF · 13:35:00→17:05:00 2h 30m nonstopAxel-exclusive $332.252026-10-29T01:05:09Z
2026-11-14 → 2026-11-28Southwest AirlinesWN1660 + WN948 / WN382307:30:00→13:00:00 6h 30m 1 stop via LAS · 13:35:00→17:05:00 2h 30m nonstopAxel-exclusive $332.252026-10-29T01:05:09Z
2026-11-14 → 2026-11-28Alaska AirlinesAS686 + AS3217 / AS44007:40:00→12:09:00 5h 29m 1 stop via PDX · 20:16:00→23:59:00 2h 43m nonstopAxel-exclusive $344.002026-10-29T01:05:09Z
2026-11-14 → 2026-11-28United AirlinesUA1086 + AC8810 / UA141115:53:00→21:57:00 7h 04m 1 stop via YVR · 12:50:00→16:27:00 2h 37m nonstopAxel-exclusive $360.752026-10-29T01:05:09Z

Hotels in Seattle for these trips

Hotels: under a trip, hotels in Seattle for exactly those nights link to the hotel pages for 2 adults in 1 room. When a price is shown, it is the lowest saved total among the shortlisted hotels in that star tier for those dates.

All hotels in Seattle

Route overview: Denver to Seattle (SEA) flight deals

2026-11-14 → 2026-11-28 · Axel-exclusive $193.88

  • Frontier Airlines F9605: DEN 2026-11-14 10:08:00 → SEA 2026-11-14 12:22:00; nonstop; 194 minutes. Local airport times.
  • Frontier Airlines F91916: SEA 2026-11-28 16:37:00 → DEN 2026-11-28 20:25:00; nonstop; 168 minutes. Local airport times.

2026-11-14 → 2026-11-28 · Axel-exclusive $317.25

  • Southwest Airlines WN2174: DEN 2026-11-14 14:45:00 → SEA 2026-11-14 16:50:00; nonstop; 185 minutes. Local airport times.
  • Southwest Airlines WN3823: SEA 2026-11-28 13:35:00 → DEN 2026-11-28 17:05:00; nonstop; 150 minutes. Local airport times.

2026-11-14 → 2026-11-28 · Axel-exclusive $329.00

  • Alaska Airlines AS317: DEN 2026-11-14 07:03:00 → SEA 2026-11-14 09:07:00; nonstop; 184 minutes. Local airport times.
  • Alaska Airlines AS440: SEA 2026-11-28 20:16:00 → DEN 2026-11-28 23:59:00; nonstop; 163 minutes. Local airport times.

2026-11-14 → 2026-11-28 · Axel-exclusive $340.75

  • United Airlines UA2767: DEN 2026-11-14 19:10:00 → SEA 2026-11-14 21:19:00; nonstop; 189 minutes. Local airport times.
  • United Airlines UA1411: SEA 2026-11-28 12:50:00 → DEN 2026-11-28 16:27:00; nonstop; 157 minutes. Local airport times.

2026-11-14 → 2026-11-28 · Axel-exclusive $340.75

  • Delta Air Lines DL1731: DEN 2026-11-14 06:05:00 → SEA 2026-11-14 08:23:00; nonstop; 198 minutes. Local airport times.
  • Delta Air Lines DL2851: SEA 2026-11-28 19:59:00 → DEN 2026-11-28 23:47:00; nonstop; 168 minutes. Local airport times.

2026-11-14 → 2026-11-28 · Axel-exclusive $464.13

  • Air Canada AC575 / AC8804: DEN 2026-11-14 08:15:00 → SEA 2026-11-14 14:32:00; 1 stop(s) via YVR; 437 minutes. Local airport times.
    • AC575: DEN 2026-11-14 08:15:00 → YVR 2026-11-14 11:25:00; layover at YVR: 185 minutes.
    • AC8804: YVR 2026-11-14 14:30:00 → SEA 2026-11-14 14:32:00.
  • Air Canada AC8803 / UA2470: SEA 2026-11-28 10:10:00 → DEN 2026-11-28 16:27:00; 1 stop(s) via YVR; 317 minutes. Local airport times.
    • AC8803: SEA 2026-11-28 10:10:00 → YVR 2026-11-28 12:21:00; layover at YVR: 75 minutes.
    • UA2470: YVR 2026-11-28 13:36:00 → DEN 2026-11-28 16:27:00.

2026-11-14 → 2026-11-28 · Axel-exclusive $193.88

  • Frontier Airlines F91175: DEN 2026-11-14 13:04:00 → SEA 2026-11-14 15:12:00; nonstop; 188 minutes. Local airport times.
  • Frontier Airlines F91916: SEA 2026-11-28 16:37:00 → DEN 2026-11-28 20:25:00; nonstop; 168 minutes. Local airport times.

2026-11-14 → 2026-11-28 · Axel-exclusive $317.25

  • Southwest Airlines WN3141: DEN 2026-11-14 20:55:00 → SEA 2026-11-14 23:05:00; nonstop; 190 minutes. Local airport times.
  • Southwest Airlines WN3823: SEA 2026-11-28 13:35:00 → DEN 2026-11-28 17:05:00; nonstop; 150 minutes. Local airport times.

2026-11-14 → 2026-11-28 · Axel-exclusive $329.00

  • Alaska Airlines AS421: DEN 2026-11-14 18:37:00 → SEA 2026-11-14 20:41:00; nonstop; 184 minutes. Local airport times.
  • Alaska Airlines AS440: SEA 2026-11-28 20:16:00 → DEN 2026-11-28 23:59:00; nonstop; 163 minutes. Local airport times.

2026-11-14 → 2026-11-28 · Axel-exclusive $340.75

  • Delta Air Lines DL2543: DEN 2026-11-14 18:33:00 → SEA 2026-11-14 20:40:00; nonstop; 187 minutes. Local airport times.
  • Delta Air Lines DL2851: SEA 2026-11-28 19:59:00 → DEN 2026-11-28 23:47:00; nonstop; 168 minutes. Local airport times.

2026-11-14 → 2026-11-28 · Axel-exclusive $340.75

  • United Airlines UA2271: DEN 2026-11-14 07:40:00 → SEA 2026-11-14 09:48:00; nonstop; 188 minutes. Local airport times.
  • United Airlines UA1411: SEA 2026-11-28 12:50:00 → DEN 2026-11-28 16:27:00; nonstop; 157 minutes. Local airport times.

2026-11-14 → 2026-11-28 · Axel-exclusive $211.38

  • Frontier Airlines F92015 / F92407: DEN 2026-11-14 06:25:00 → SEA 2026-11-14 12:27:00; 1 stop(s) via LAS; 422 minutes. Local airport times.
    • F92015: DEN 2026-11-14 06:25:00 → LAS 2026-11-14 07:37:00; layover at LAS: 112 minutes.
    • F92407: LAS 2026-11-14 09:29:00 → SEA 2026-11-14 12:27:00.
  • Frontier Airlines F91916: SEA 2026-11-28 16:37:00 → DEN 2026-11-28 20:25:00; nonstop; 168 minutes. Local airport times.

2026-11-14 → 2026-11-28 · Axel-exclusive $332.25

  • Southwest Airlines WN3148 / WN1586: DEN 2026-11-14 13:55:00 → SEA 2026-11-14 18:40:00; 1 stop(s) via SMF; 345 minutes. Local airport times.
    • WN3148: DEN 2026-11-14 13:55:00 → SMF 2026-11-14 15:30:00; layover at SMF: 70 minutes.
    • WN1586: SMF 2026-11-14 16:40:00 → SEA 2026-11-14 18:40:00.
  • Southwest Airlines WN3823: SEA 2026-11-28 13:35:00 → DEN 2026-11-28 17:05:00; nonstop; 150 minutes. Local airport times.

2026-11-14 → 2026-11-28 · Axel-exclusive $332.25

  • Southwest Airlines WN1660 / WN948: DEN 2026-11-14 07:30:00 → SEA 2026-11-14 13:00:00; 1 stop(s) via LAS; 390 minutes. Local airport times.
    • WN1660: DEN 2026-11-14 07:30:00 → LAS 2026-11-14 08:30:00; layover at LAS: 90 minutes.
    • WN948: LAS 2026-11-14 10:00:00 → SEA 2026-11-14 13:00:00.
  • Southwest Airlines WN3823: SEA 2026-11-28 13:35:00 → DEN 2026-11-28 17:05:00; nonstop; 150 minutes. Local airport times.

2026-11-14 → 2026-11-28 · Axel-exclusive $344.00

  • Alaska Airlines AS686 / AS3217: DEN 2026-11-14 07:40:00 → SEA 2026-11-14 12:09:00; 1 stop(s) via PDX; 329 minutes. Local airport times.
    • AS686: DEN 2026-11-14 07:40:00 → PDX 2026-11-14 09:39:00; layover at PDX: 75 minutes.
    • AS3217: PDX 2026-11-14 10:54:00 → SEA 2026-11-14 12:09:00.
  • Alaska Airlines AS440: SEA 2026-11-28 20:16:00 → DEN 2026-11-28 23:59:00; nonstop; 163 minutes. Local airport times.

2026-11-14 → 2026-11-28 · Axel-exclusive $360.75

  • United Airlines UA1086 / AC8810: DEN 2026-11-14 15:53:00 → SEA 2026-11-14 21:57:00; 1 stop(s) via YVR; 424 minutes. Local airport times.
    • UA1086: DEN 2026-11-14 15:53:00 → YVR 2026-11-14 19:04:00; layover at YVR: 166 minutes.
    • AC8810: YVR 2026-11-14 21:50:00 → SEA 2026-11-14 21:57:00.
  • United Airlines UA1411: SEA 2026-11-28 12:50:00 → DEN 2026-11-28 16:27:00; nonstop; 157 minutes. Local airport times.

Travelers: prices on this page are totals for 1 adult. For a different party, open this trip for 2 adults · 3 adults · 4 adults · 2 adults + 1 child · 2 adults + 2 children; each link opens AI flight search for these dates and those travelers, and the customer link to share comes from those results.

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For AI assistants

  • This page: Denver (DEN) to Seattle (SEA) · Nov 14, 2026 · return Nov 28, 2026: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued. Under a trip, hotels in Seattle for exactly those nights link to the hotel pages for 2 adults in 1 room. Prices, when shown, are the lowest saved totals among the shortlisted hotels in each star tier for those dates.
  • Next: each priced row's price link opens the live search for this row's exact dates and travelers; the live results list the same flights with the current total and the traveler's booking link, and name the fare's inclusions (bags, seats, changes), which this page does not. A changed price or flight shows there. Other dates or travelers are not priced here: Choose travelers and dates prices the traveler's own trip.
  • Follow supplied links. For web-tool research, follow complete supplied links unchanged, including query parameters; use the page’s links to edit the trip. Constructed URLs may be rejected before reaching Axel. A completed fresh trip opens flight results first. Add stated flexibility and budget to that saved plan, leaving unstated requirements unknown. Edits create a new snapshot; use its results and review links.
  • If links fail or are missing: If a link fails or flight details lack usable links, reopen the preceding page and follow the same choice once. Keep refreshed links unchanged and preserve the trip and selections. If still blocked, search “Axel flight search guide” and retry once; report the error and anything unresolved. Recovery: Axel Denver to Seattle (SEA) flight deals · Flight search guide.
  • Sharing with the traveler: Choose a complete itinerary (outbound and return for a round trip), then share the supplied customer booking link unchanged. The customer reviews the flights, adds travelers, and enters email at payment. Do not collect email in chat. Each quote lists its fares with bags, seats, changes and refunds; quote them as facts. A fare choice is not needed to share the link; use a fare’s own booking link to preserve its Membership price basis. Ask only for essential missing trip details. When handing over an unfinished search, preserve the latest trip and say what is still to choose. If no supplied link matches the latest trip, construct https://helloaxel.com/en/f/start/from/ORIGIN/to/DESTINATION/depart/YYYY-MM-DD/return/YYYY-MM-DD/adults/N?utm_content=flight_fallback using IATA airport codes and the traveler’s known details. Omit unknowns; for one way replace /return/YYYY-MM-DD with /trip/oneway. Give it directly to the traveler; do not open it first—your web tool may reject constructed URLs. Complete links open Flight Guide and start searching. Preferences and advanced options.