Seattle to Kauai: what the flight costs
In the last 60 days we checked this route 7 times. The typical return was £399 per person and the lowest £305, taxes and fees included.
| Per person | |
|---|---|
| Lowest seen | £305 |
| Typical (median) | £399 |
| Price checks, 60 days | 7 |
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Trips we picked on this route
Just found · from SeattleLowest in 30 daysWorth it, if
Kauai
14 – 21 Nov 2026 · 7 nights
- Fare $404 per person, $145 below the typical fare on this route
- Sunny south shore base in Poipu, with turtles at Poipu Beach
- Typical highs 79–81°F and lows near 71°F for the week
£2,206 for two · 7 nights · flights, hotel, taxes & fees
Flights £609 + hotel £1,597, taxes in · a checked bag each adds about £121
United · with a stop · 8h 55m
The catch: The United flight out has one stop and takes 8h 55m, and the November normals show drizzle on most days, with a wetter north shore.
Worth it if you want warm, slow beach days on the sunny south shore; skip it if you need a nonstop or dry north-shore hiking.
Every fare we found in the last 30 days
| Checked | Trip dates | Per person | Airline | Stops | Duration | Source |
|---|---|---|---|---|---|---|
| 14 Oct 2026 | 14 – 21 Nov 2026 | £399 | AS | with a stop | 18h 33m | Kiwi.com |
| 14 Oct 2026 | 14 – 21 Nov 2026 | £439 | AS | with a stop | 19h 13m | Kiwi.com |
| 14 Oct 2026 | 14 – 21 Nov 2026 | £305 | United | with a stop | 8h 55m | Google Flights |
| 14 Oct 2026 | 14 – 21 Nov 2026 | £399 | AS | with a stop | 18h 33m | Kiwi.com |
| 12 Oct 2026 | 14 – 21 Nov 2026 | £434 | AS | with a stop | 24h 21m | Kiwi.com |
| 12 Oct 2026 | 14 – 21 Nov 2026 | £305 | United | with a stop | 8h 55m | Google Flights |
| 12 Oct 2026 | 14 – 21 Nov 2026 | £428 | AS | nonstop | 6h 22m | Kiwi.com |
About Kauai
Kauai is the Garden Isle, where the Na Pali cliffs, Waimea Canyon and quiet beaches make it the island for nature and slow days.
Kauai from every city: when to go, where to stay, what to do
Questions about Seattle to Kauai
What does a return from Seattle to Kauai usually cost?
Over the last 60 days the typical price we found was £399 per person, taxes and fees included, across 7 checks; the lowest was £305.
When is the best time to fly from Seattle to Kauai?
Kauai is at its best in April, May, June, September, October and November.
Do I need a passport to fly from Seattle to Kauai?
No passport needed for travellers from the United States: a government photo ID is enough for Kauai.
Prices converted from US dollars at the rate of 15 Oct 2026.