Denver (DEN) to Seattle (SEA), Dec 12, 2026: round trips from $165, one way from $85

Denver (DEN) to Seattle (SEA), Dec 12, 2026: round trips from $165, one way from $85 on Axel, checked Nov 13, 2026. Lowest published fares: $165 round trip, Axel-exclusive, Frontier Airlines, nonstop, Dec 12–13, 2026; $85 one way, Axel-exclusive, Frontier Airlines, nonstop, Dec 12, 2026; 1 adult, economy, checked Nov 13, 2026. Flights for 1 adult in economy. Prices are total for all travelers in USD, including required taxes. Basic economy may apply.

Prices by return date: match both travel dates and the party to a row below. Each total is for that exact trip, labelled with the check date shown.

Date links open published trip details for exploration. Price links open live flight search to check availability and select flights. For a price comparison, use the amounts and check dates already shown here.

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 nightly rate and the stay's total, from the lowest saved total among the shortlisted hotels in that star tier for those dates.

• Hotels in Seattle for these nights (Dec 12–13, 2026 · 1 night · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $81 a night · 4★ Hilton Seattle Airport & Conference Center, $105 a night · 5★ Fairmont Olympic Hotel, $473 a night
• Hotels in Seattle for these nights (Dec 12–14, 2026 · 2 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $80 a night, $159 for 2 nights · 4★ Hilton Seattle Airport & Conference Center, $104 a night, $208 for 2 nights · 5★ Fairmont Olympic Hotel, $380 a night, $760 for 2 nights
• Hotels in Seattle for these nights (Dec 12–15, 2026 · 3 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $79 a night, $237 for 3 nights · 4★ Hilton Seattle Airport & Conference Center, $104 a night, $313 for 3 nights · 5★ Fairmont Olympic Hotel, $348 a night, $1,045 for 3 nights
• Hotels in Seattle for these nights (Dec 12–16, 2026 · 4 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $78 a night, $312 for 4 nights · 4★ Hilton Seattle Airport & Conference Center, $105 a night, $418 for 4 nights · 5★ Fairmont Olympic Hotel, $331 a night, $1,324 for 4 nights
• Hotels in Seattle for these nights (Dec 12–17, 2026 · 5 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $77 a night, $387 for 5 nights · 4★ Hilton Seattle Airport & Conference Center, $104 a night, $519 for 5 nights · 5★ Fairmont Olympic Hotel, $325 a night, $1,624 for 5 nights
• Hotels in Seattle for these nights (Dec 12–18, 2026 · 6 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $78 a night, $465 for 6 nights · 4★ Hilton Seattle Airport & Conference Center, $104 a night, $624 for 6 nights · 5★ Fairmont Olympic Hotel, $316 a night, $1,898 for 6 nights
• Hotels in Seattle for these nights (Dec 12–19, 2026 · 7 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $78 a night, $544 for 7 nights · 4★ Hilton Seattle Airport & Conference Center, $104 a night, $729 for 7 nights · 5★ Fairmont Olympic Hotel, $312 a night, $2,181 for 7 nights
• Hotels in Seattle for these nights (Dec 12–20, 2026 · 8 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $78 a night, $625 for 8 nights · 4★ Hilton Seattle Airport & Conference Center, $104 a night, $834 for 8 nights · 5★ Fairmont Olympic Hotel, $309 a night, $2,468 for 8 nights
• Hotels in Seattle for these nights (Dec 12–21, 2026 · 9 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $78 a night, $701 for 9 nights · 4★ Hilton Seattle Airport & Conference Center, $104 a night, $939 for 9 nights · 5★ Fairmont Olympic Hotel, $304 a night, $2,735 for 9 nights
• Hotels in Seattle for these nights (Dec 12–22, 2026 · 10 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $78 a night, $779 for 10 nights · 4★ Hilton Seattle Airport & Conference Center, $104 a night, $1,044 for 10 nights · 5★ Fairmont Olympic Hotel, $303 a night, $3,031 for 10 nights
• Hotels in Seattle for these nights (Dec 12–23, 2026 · 11 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $78 a night, $855 for 11 nights · 4★ Hilton Seattle Airport & Conference Center, $104 a night, $1,149 for 11 nights · 5★ Fairmont Olympic Hotel, $303 a night, $3,332 for 11 nights
• Hotels in Seattle for these nights (Dec 12–24, 2026 · 12 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $78 a night, $933 for 12 nights · 4★ Hilton Seattle Airport & Conference Center, $105 a night, $1,254 for 12 nights · 5★ Fairmont Olympic Hotel, $301 a night, $3,614 for 12 nights
• Hotels in Seattle for these nights (Dec 12–25, 2026 · 13 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $78 a night, $1,013 for 13 nights · 4★ Hilton Seattle Airport & Conference Center, $105 a night, $1,359 for 13 nights · 5★ Fairmont Olympic Hotel, $299 a night, $3,888 for 13 nights
• Hotels in Seattle for these nights (Dec 12–26, 2026 · 14 nights · 2 adults, 1 room): 3★ Red Lion Hotel Bellevue, $78 a night, $1,092 for 14 nights · 4★ Hilton Seattle Airport & Conference Center, $105 a night, $1,464 for 14 nights · 5★ Fairmont Olympic Hotel, $303 a night, $4,245 for 14 nights

All hotels in Seattle

Route overview: Denver to Seattle (SEA) flight deals

2026-12-12 · one way · Axel-exclusive $85

• Frontier Airlines F94545: DEN 2026-12-12 13:32:00 → SEA 2026-12-12 15:43:00; nonstop; 191 minutes. Local airport times.

2026-12-12 · one way · Axel-exclusive $140

• Southwest Airlines WN3141: DEN 2026-12-12 20:55:00 → SEA 2026-12-12 23:05:00; nonstop; 190 minutes. Local airport times.

2026-12-12 → 2026-12-13 · Axel-exclusive $165

• Frontier Airlines F94545: DEN 2026-12-12 13:32:00 → SEA 2026-12-12 15:43:00; nonstop; 191 minutes. Local airport times.
• Frontier Airlines F91916: SEA 2026-12-13 16:37:00 → DEN 2026-12-13 20:25:00; nonstop; 168 minutes. Local airport times.

2026-12-12 → 2026-12-13 · Axel-exclusive $270

• Southwest Airlines WN3141: DEN 2026-12-12 20:55:00 → SEA 2026-12-12 23:05:00; nonstop; 190 minutes. Local airport times.
• Southwest Airlines WN3823: SEA 2026-12-13 13:55:00 → DEN 2026-12-13 17:30:00; nonstop; 155 minutes. Local airport times.

2026-12-12 → 2026-12-14 · Axel-exclusive $165

• Frontier Airlines F94545: DEN 2026-12-12 13:32:00 → SEA 2026-12-12 15:43:00; nonstop; 191 minutes. Local airport times.
• Frontier Airlines F91916: SEA 2026-12-14 13:37:00 → DEN 2026-12-14 17:26:00; nonstop; 169 minutes. Local airport times.

2026-12-12 → 2026-12-14 · Axel-exclusive $270

• Southwest Airlines WN3141: DEN 2026-12-12 20:55:00 → SEA 2026-12-12 23:05:00; nonstop; 190 minutes. Local airport times.
• Southwest Airlines WN4956: SEA 2026-12-14 06:15:00 → DEN 2026-12-14 09:45:00; nonstop; 150 minutes. Local airport times.

2026-12-12 → 2026-12-15 · Axel-exclusive $165

• Frontier Airlines F94545: DEN 2026-12-12 13:32:00 → SEA 2026-12-12 15:43:00; nonstop; 191 minutes. Local airport times.
• Frontier Airlines F91916: SEA 2026-12-15 16:58:00 → DEN 2026-12-15 20:48:00; nonstop; 170 minutes. Local airport times.

2026-12-12 → 2026-12-15 · Axel-exclusive $270

• Southwest Airlines WN3141: DEN 2026-12-12 20:55:00 → SEA 2026-12-12 23:05:00; nonstop; 190 minutes. Local airport times.
• Southwest Airlines WN2150: SEA 2026-12-15 09:25:00 → DEN 2026-12-15 13:00:00; nonstop; 155 minutes. Local airport times.

2026-12-12 → 2026-12-16 · Axel-exclusive $165

• Frontier Airlines F94545: DEN 2026-12-12 13:32:00 → SEA 2026-12-12 15:43:00; nonstop; 191 minutes. Local airport times.
• Frontier Airlines F91916: SEA 2026-12-16 16:37:00 → DEN 2026-12-16 20:25:00; nonstop; 168 minutes. Local airport times.

2026-12-12 → 2026-12-16 · Axel-exclusive $285

• Southwest Airlines WN3141: DEN 2026-12-12 20:55:00 → SEA 2026-12-12 23:05:00; nonstop; 190 minutes. Local airport times.
• Southwest Airlines WN3833 / WN2542: SEA 2026-12-16 05:15:00 → DEN 2026-12-16 12:30:00; 1 stop(s) via SMF; 375 minutes. Local airport times.
  • WN3833: SEA 2026-12-16 05:15:00 → SMF 2026-12-16 07:05:00; layover at SMF: 130 minutes.
  • WN2542: SMF 2026-12-16 09:15:00 → DEN 2026-12-16 12:30:00.

2026-12-12 → 2026-12-18 · Axel-exclusive $198

• Frontier Airlines F94545: DEN 2026-12-12 13:32:00 → SEA 2026-12-12 15:43:00; nonstop; 191 minutes. Local airport times.
• Frontier Airlines F91916: SEA 2026-12-18 16:58:00 → DEN 2026-12-18 20:48:00; nonstop; 170 minutes. Local airport times.

2026-12-12 → 2026-12-18 · Axel-exclusive $324

• Southwest Airlines WN3141: DEN 2026-12-12 20:55:00 → SEA 2026-12-12 23:05:00; nonstop; 190 minutes. Local airport times.
• Southwest Airlines WN3823: SEA 2026-12-18 13:55:00 → DEN 2026-12-18 17:30:00; nonstop; 155 minutes. Local airport times.

2026-12-12 → 2026-12-19 · Axel-exclusive $198

• Frontier Airlines F94545: DEN 2026-12-12 13:32:00 → SEA 2026-12-12 15:43:00; nonstop; 191 minutes. Local airport times.
• Frontier Airlines F91916: SEA 2026-12-19 13:37:00 → DEN 2026-12-19 17:26:00; nonstop; 169 minutes. Local airport times.

2026-12-12 → 2026-12-19 · Axel-exclusive $324

• Southwest Airlines WN3141: DEN 2026-12-12 20:55:00 → SEA 2026-12-12 23:05:00; nonstop; 190 minutes. Local airport times.
• Southwest Airlines WN2150: SEA 2026-12-19 09:25:00 → DEN 2026-12-19 13:00:00; nonstop; 155 minutes. Local airport times.

2026-12-12 → 2026-12-20 · Axel-exclusive $198

• Frontier Airlines F94545: DEN 2026-12-12 13:32:00 → SEA 2026-12-12 15:43:00; nonstop; 191 minutes. Local airport times.
• Frontier Airlines F91916: SEA 2026-12-20 16:37:00 → DEN 2026-12-20 20:25:00; nonstop; 168 minutes. Local airport times.

2026-12-12 → 2026-12-20 · Axel-exclusive $324

• Southwest Airlines WN3141: DEN 2026-12-12 20:55:00 → SEA 2026-12-12 23:05:00; nonstop; 190 minutes. Local airport times.
• Southwest Airlines WN3823: SEA 2026-12-20 13:55:00 → DEN 2026-12-20 17:30:00; nonstop; 155 minutes. Local airport times.

2026-12-12 → 2026-12-22 · Axel-exclusive $198

• Frontier Airlines F94545: DEN 2026-12-12 13:32:00 → SEA 2026-12-12 15:43:00; nonstop; 191 minutes. Local airport times.
• Frontier Airlines F91916: SEA 2026-12-22 13:37:00 → DEN 2026-12-22 17:26:00; nonstop; 169 minutes. Local airport times.

2026-12-12 → 2026-12-22 · Axel-exclusive $324

• Southwest Airlines WN3141: DEN 2026-12-12 20:55:00 → SEA 2026-12-12 23:05:00; nonstop; 190 minutes. Local airport times.
• Southwest Airlines WN2150: SEA 2026-12-22 09:25:00 → DEN 2026-12-22 13:00:00; nonstop; 155 minutes. Local airport times.

2026-12-12 → 2026-12-23 · Axel-exclusive $198

• Frontier Airlines F94545: DEN 2026-12-12 13:32:00 → SEA 2026-12-12 15:43:00; nonstop; 191 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.

2026-12-12 → 2026-12-23 · Axel-exclusive $345

• Southwest Airlines WN3141: DEN 2026-12-12 20:55:00 → SEA 2026-12-12 23:05:00; 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.

2026-12-12 → 2026-12-24 · Axel-exclusive $198

• Frontier Airlines F94545: DEN 2026-12-12 13:32:00 → SEA 2026-12-12 15:43:00; nonstop; 191 minutes. Local airport times.
• Frontier Airlines F91916: SEA 2026-12-24 13:37:00 → DEN 2026-12-24 17:26:00; nonstop; 169 minutes. Local airport times.

2026-12-12 → 2026-12-24 · Axel-exclusive $324

• Southwest Airlines WN3141: DEN 2026-12-12 20:55:00 → SEA 2026-12-12 23:05:00; nonstop; 190 minutes. Local airport times.
• Southwest Airlines WN2150: SEA 2026-12-24 09:25:00 → DEN 2026-12-24 13:00:00; nonstop; 155 minutes. Local airport times.

2026-12-12 → 2026-12-26 · Axel-exclusive $198

• Frontier Airlines F94545: DEN 2026-12-12 13:32:00 → SEA 2026-12-12 15:43:00; nonstop; 191 minutes. Local airport times.
• Frontier Airlines F91916: SEA 2026-12-26 13:37:00 → DEN 2026-12-26 17:26:00; nonstop; 169 minutes. Local airport times.

2026-12-12 → 2026-12-26 · Axel-exclusive $324

• Southwest Airlines WN3141: DEN 2026-12-12 20:55:00 → SEA 2026-12-12 23:05:00; nonstop; 190 minutes. Local airport times.
• Southwest Airlines WN3823: SEA 2026-12-26 14:30:00 → DEN 2026-12-26 17:55:00; nonstop; 145 minutes. Local airport times.

Explore this route

• All dates for this route
• Dec 11, 2026 · Return options
• Dec 13, 2026 · Return options
• Hotels in Seattle with Axel

For AI assistants

• This page: Denver (DEN) to Seattle (SEA) · Dec 12, 2026 · choose your return date: 1 adult in economy, every priced fare with its flights, times and total, each with its displayed check date. 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 nightly rate and the stay's total, from the lowest saved total among the shortlisted hotels in each star tier for those dates.
• Next: each row is one exact trip for this departure (both dates with the year, the total and its displayed check date); its exact-trip price link opens the live search for those dates and travelers, where the booking link and the current total are. Other durations or travelers are not priced here: Choose travelers and dates prices the requested 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.

Feedback (optional): Missing info · Axel issue