Idaho Falls (IDA) to Seattle (SEA), Dec 30, 2026 – Jan 13, 2027: from $378 round trip

Idaho Falls (IDA) to Seattle (SEA), Dec 30, 2026 – Jan 13, 2027: from $378 round trip on Axel, checked Oct 29, 2026. Lowest published fare: $378 round trip, Axel-exclusive, Alaska Airlines, nonstop, Dec 30, 2026 – Jan 13, 2027, 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.

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.

• Hotels in Seattle for these nights (Dec 30 – Jan 13, 2027 · 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

All hotels in Seattle

Route overview: Idaho Falls to Seattle (SEA) flight deals

2026-12-30 → 2027-01-13 · Axel-exclusive $378.35

• Alaska Airlines AS3423: IDA 2026-12-30 06:00:00 → SEA 2026-12-30 07:20:00; nonstop; 140 minutes. Local airport times.
• Alaska Airlines AS3026: SEA 2027-01-13 12:30:00 → IDA 2027-01-13 15:18:00; nonstop; 108 minutes. Local airport times.

2026-12-30 → 2027-01-13 · Axel-exclusive $435.85

• Delta Air Lines DL3765 / DL871: IDA 2026-12-30 13:11:00 → SEA 2026-12-30 18:47:00; 1 stop(s) via SLC; 396 minutes. Local airport times.
  • DL3765: IDA 2026-12-30 13:11:00 → SLC 2026-12-30 14:18:00; layover at SLC: 193 minutes.
  • DL871: SLC 2026-12-30 17:31:00 → SEA 2026-12-30 18:47:00.
• Delta Air Lines DL1128 / DL3765: SEA 2027-01-13 05:35:00 → IDA 2027-01-13 12:15:00; 1 stop(s) via SLC; 340 minutes. Local airport times.
  • DL1128: SEA 2027-01-13 05:35:00 → SLC 2027-01-13 08:40:00; layover at SLC: 145 minutes.
  • DL3765: SLC 2027-01-13 11:05:00 → IDA 2027-01-13 12:15:00.

2026-12-30 → 2027-01-13 · Axel-exclusive $378.35

• Alaska Airlines AS3027: IDA 2026-12-30 13:53:00 → SEA 2026-12-30 14:57:00; nonstop; 124 minutes. Local airport times.
• Alaska Airlines AS3026: SEA 2027-01-13 12:30:00 → IDA 2027-01-13 15:18:00; nonstop; 108 minutes. Local airport times.

2026-12-30 → 2027-01-13 · Axel-exclusive $393.35

• Alaska Airlines AS3027: IDA 2026-12-30 13:52:00 → SEA 2026-12-30 15:02:00; nonstop; 130 minutes. Local airport times.
• Alaska Airlines AS2238 / AS3452: SEA 2027-01-13 07:38:00 → IDA 2027-01-13 13:15:00; 1 stop(s) via PDX; 277 minutes. Local airport times.
  • AS2238: SEA 2027-01-13 07:38:00 → PDX 2027-01-13 08:35:00; layover at PDX: 115 minutes.
  • AS3452: PDX 2027-01-13 10:30:00 → IDA 2027-01-13 13:15:00.

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.

Explore this route

• All dates for this route
• Dec 29, 2026 · Return options
• Dec 31, 2026 · Return options
• Hotels in Seattle with Axel

For AI assistants

• This page: Idaho Falls (IDA) to Seattle (SEA) · Dec 30, 2026 · return Jan 13, 2027: 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 Idaho Falls 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