Travel with Axel,
get the best price.

Seattle → Reykjavik

Choose your travel dates

SEA → KEF1 adulteconomy

9 flight options · 3 airlines

Round-trip flights

Fri, Nov 20 – Mon, Nov 23

FI
2:35 pmSEA
7h 40m
Nonstop
6:15 am+1KEF
FI
5:00 pmKEF
8h
Nonstop
5:00 pmSEA

Round-trip total · 1 adult · Taxes included

Fri, Nov 20 – Mon, Nov 23

Alaska Airlines
6:45 pmSEA
14h 20m
LHR · 1h 25m
5:05 pm+1KEF
FI
5:00 pmKEF
8h
Nonstop
5:00 pmSEA

Round-trip total · 1 adult · Taxes included

Fri, Nov 20 – Mon, Nov 23

British Airways
6:45 pmSEA
14h 20m
LHR · 1h 35m
5:05 pm+1KEF
FI
5:00 pmKEF
8h
Nonstop
5:00 pmSEA

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

FI
2:35 pmSEA
7h 40m
Nonstop
6:15 am+1KEF
FI
5:00 pmKEF
8h
Nonstop
5:00 pmSEA

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

Alaska Airlines
6:45 pmSEA
14h 20m
LHR · 1h 25m
5:05 pm+1KEF
FI
5:00 pmKEF
8h
Nonstop
5:00 pmSEA

Round-trip total · 1 adult · Taxes included

Fri, Nov 27 – Fri, Dec 4

British Airways
6:45 pmSEA
14h 20m
LHR · 1h 35m
5:05 pm+1KEF
FI
5:00 pmKEF
8h
Nonstop
5:00 pmSEA

Round-trip total · 1 adult · Taxes included

One-way flights

Fri, Nov 20 · One way

FI
2:35 pmSEA
7h 40m
Nonstop
6:15 am+1KEF

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

Alaska Airlines
6:45 pmSEA
14h 20m
LHR · 1h 25m
5:05 pm+1KEF

One-way total · 1 adult · Taxes included

Fri, Nov 20 · One way

British Airways
6:45 pmSEA
14h 20m
LHR · 1h 35m
5:05 pm+1KEF

One-way total · 1 adult · Taxes included

Make this trip yours

SEA ⇄ KEF

Economy

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

No account needed to see prices.

Already have an account? Log in

Why book with Axel
  • A real airline bookingThe booking is in the airline’s own system under your name. After you book, FI emails you its confirmation code and e-ticket, usually within 15 minutes and occasionally up to a couple of hours while the booking is processed.
  • Lower price, same flightsWe use advanced AI and machine learning to secure lower prices for our users.
  • 24-hour cancellationCancel within 24 hours of booking for a full refund when your departure is at least 7 days away. Closer to departure, the airline’s fare rules apply. Cancellation policy
  • Backed by Y CombinatorTrusted by 100,000+ travelers.

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

More dates

Nov 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)
2026-11-20 · one wayFIFI680$418.002026-10-29T01:15:29Z
2026-11-20 → 2026-11-23FIFI680 / FI681$646.752026-10-29T01:15:29Z
2026-11-20 · one wayAlaska AirlinesAS100 + BA802$465.502026-10-29T01:15:29Z
2026-11-20 · one wayBritish AirwaysBA48 + BA802$617.502026-10-29T01:15:29Z
2026-11-20 → 2026-11-23Alaska Airlines / FIAS100 + BA802 / FI681$699.002026-10-29T01:15:29Z
2026-11-20 → 2026-11-23British Airways / FIBA48 + BA802 / FI681$741.752026-10-29T01:15:29Z
2026-11-27 → 2026-12-04FIFI680 / FI681$663.002026-10-29T01:15:29Z
2026-11-27 → 2026-12-04Alaska Airlines / FIAS100 + BA802 / FI681$720.202026-10-29T01:15:29Z
2026-11-27 → 2026-12-04British Airways / FIBA48 + BA802 / FI681$767.002026-10-29T01:15:29Z

2026-11-20 · one way · $418.00

  • FI FI680: SEA 2026-11-20 14:35:00 → KEF 2026-11-21 06:15:00; nonstop; 460 minutes. Local airport times.

2026-11-20 → 2026-11-23 · $646.75

  • FI FI680: SEA 2026-11-20 14:35:00 → KEF 2026-11-21 06:15:00; nonstop; 460 minutes. Local airport times.
  • FI FI681: KEF 2026-11-23 17:00:00 → SEA 2026-11-23 17:00:00; nonstop; 480 minutes. Local airport times.

2026-11-20 · one way · $465.50

  • Alaska Airlines AS100 / BA802: SEA 2026-11-20 18:45:00 → KEF 2026-11-21 17:05:00; 1 stop(s) via LHR; 860 minutes. Local airport times.
    • AS100: SEA 2026-11-20 18:45:00 → LHR 2026-11-21 12:20:00; layover at LHR: 85 minutes.
    • BA802: LHR 2026-11-21 13:45:00 → KEF 2026-11-21 17:05:00.

2026-11-20 · one way · $617.50

  • British Airways BA48 / BA802: SEA 2026-11-20 18:45:00 → KEF 2026-11-21 17:05:00; 1 stop(s) via LHR; 860 minutes. Local airport times.
    • BA48: SEA 2026-11-20 18:45:00 → LHR 2026-11-21 12:10:00; layover at LHR: 95 minutes.
    • BA802: LHR 2026-11-21 13:45:00 → KEF 2026-11-21 17:05:00.

2026-11-20 → 2026-11-23 · $699.00

  • Alaska Airlines AS100 / BA802: SEA 2026-11-20 18:45:00 → KEF 2026-11-21 17:05:00; 1 stop(s) via LHR; 860 minutes. Local airport times.
    • AS100: SEA 2026-11-20 18:45:00 → LHR 2026-11-21 12:20:00; layover at LHR: 85 minutes.
    • BA802: LHR 2026-11-21 13:45:00 → KEF 2026-11-21 17:05:00.
  • FI FI681: KEF 2026-11-23 17:00:00 → SEA 2026-11-23 17:00:00; nonstop; 480 minutes. Local airport times.

2026-11-20 → 2026-11-23 · $741.75

  • British Airways BA48 / BA802: SEA 2026-11-20 18:45:00 → KEF 2026-11-21 17:05:00; 1 stop(s) via LHR; 860 minutes. Local airport times.
    • BA48: SEA 2026-11-20 18:45:00 → LHR 2026-11-21 12:10:00; layover at LHR: 95 minutes.
    • BA802: LHR 2026-11-21 13:45:00 → KEF 2026-11-21 17:05:00.
  • FI FI681: KEF 2026-11-23 17:00:00 → SEA 2026-11-23 17:00:00; nonstop; 480 minutes. Local airport times.

2026-11-27 → 2026-12-04 · $663.00

  • FI FI680: SEA 2026-11-27 14:35:00 → KEF 2026-11-28 06:15:00; nonstop; 460 minutes. Local airport times.
  • FI FI681: KEF 2026-12-04 17:00:00 → SEA 2026-12-04 17:00:00; nonstop; 480 minutes. Local airport times.

2026-11-27 → 2026-12-04 · $720.20

  • Alaska Airlines AS100 / BA802: SEA 2026-11-27 18:45:00 → KEF 2026-11-28 17:05:00; 1 stop(s) via LHR; 860 minutes. Local airport times.
    • AS100: SEA 2026-11-27 18:45:00 → LHR 2026-11-28 12:20:00; layover at LHR: 85 minutes.
    • BA802: LHR 2026-11-28 13:45:00 → KEF 2026-11-28 17:05:00.
  • FI FI681: KEF 2026-12-04 17:00:00 → SEA 2026-12-04 17:00:00; nonstop; 480 minutes. Local airport times.

2026-11-27 → 2026-12-04 · $767.00

  • British Airways BA48 / BA802: SEA 2026-11-27 18:45:00 → KEF 2026-11-28 17:05:00; 1 stop(s) via LHR; 860 minutes. Local airport times.
    • BA48: SEA 2026-11-27 18:45:00 → LHR 2026-11-28 12:10:00; layover at LHR: 95 minutes.
    • BA802: LHR 2026-11-28 13:45:00 → KEF 2026-11-28 17:05:00.
  • FI FI681: KEF 2026-12-04 17:00:00 → SEA 2026-12-04 17:00:00; nonstop; 480 minutes. Local airport times.

More dates for this route