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Cheap flights from Seattle to San Jose

One-way from $160, found by travellers in the last 7 days. The live price is checked when you book.

Departure
Return
Prices for nearby dates
Mon, Jan 18Any priceTue, Jan 19Any priceWed, Jan 20Any priceThu, Jan 21$160Fri, Jan 22Any priceSat, Jan 23Any priceSun, Jan 24Any priceMon, Jan 25Any price

Cheapest one-way tickets

Recent finds on different dates, for 1 adult. Booking opens on Aviasales, which shows baggage, fare rules and the live price.

Cheapest
$160
United Airlines, flight UA 737Found 2 days ago, 1 adult
Check live price
5:44pmSeattleThu, Jan 21
Travel time 8h 45m, 1 stopSEASJO
4:29amSan JoseFri, Jan 22
$190
American Airlines, flight AA 747Found yesterday, 1 adult
Check live price
5:09amSeattleMon, Jan 4
Travel time 8h 8m, 1 stopSEASJO
3:17pmSan JoseMon, Jan 4
$259
American Airlines, flight AA 727Found yesterday, 1 adult
Check live price
5:55pmSeattleTue, Dec 22
Travel time 8h 12m, 1 stopSEASJO
4:07amSan JoseWed, Dec 23
$287
Alaska Airlines, flight AS 542Found yesterday, 1 adult
Check live price
6:01pmSeattleThu, Dec 24
Travel time 8h 10m, 1 stopSEASJO
4:11amSan JoseFri, Dec 25
$306
Alaska Airlines, flight AS 424Found yesterday, 1 adult
Check live price
12:33amSeattleFri, Dec 25
Travel time 8h 4m, 1 stopSEASJO
10:37amSan JoseFri, Dec 25

Round trips

The cheapest return tickets found recently, price for the whole trip.

Plan the rest of the trip

  • Mobile data in Costa RicaTravel eSIM from $7.50, installed before you fly.
    Compare plans
  • Getting from the airportTransfers and car hire in San Jose, booked ahead at a fixed price.
    See options
  • Things to do in San JosePopular tours from $31.45 per person.
    See ideas
  • Travel insuranceTravel insurance quotes for Costa Rica from EKTA; check what each policy covers.
    Get a quote
  • Flight delayed?Delayed or cancelled? See which passenger rights cover this route.
    Check

Price calendar

The lowest one-way fare found for each day over the next 60 days. A dash means no recent fare; you can still pick that day.

October 2026

MoTuWeThFrSaSu12345678910111213141516171819202122232425–26–27–28–29–30–31–

November 2026

MoTuWeThFrSaSu1–2–3–4–5–6–7–8–9$34010–11–12–13–14–15–16$33417–18–19–20–21–22–23–24–25–26–27–28–29–30–

December 2026

MoTuWeThFrSaSu1–2–3–4–5–6–7–8–9–10–11–12–13–14$42215$49116$44917$49818$65319–20–21–22$25923$5352425262728293031
$259 or lessGreen: the cheapest fifth of fares on this route. Lowest in these 60 days: Dec 22, $259.

Lowest fares by month

In the fares found this week, January 2027 has the lowest: from $160 one-way, against $334 in November. Pick a month to see its cheapest date.

  1. Octno fares yet
  2. Nov$334
  3. Dec$259
  4. Jan$160
  5. Febno fares yet
  6. Marno fares yet
  7. Aprno fares yet
  8. Mayno fares yet
  9. Junno fares yet
  10. Julno fares yet
  11. Augno fares yet
  12. Sepno fares yet
$0$200$400OctNovDec$160JanFebMarAprMayJunJulAugSep
Show as a table
MonthCheapest one-wayDateStops
October—
November$334Mon, Nov 161 stop
December$259Tue, Dec 221 stop
January 2027$160Thu, Jan 211 stop
February 2027—
March 2027—
April 2027—
May 2027—
June 2027—
July 2027—
August 2027—
September 2027—

Fares and weather by month

The lowest one-way fare found for each month, next to the weather in San Jose. Average daily high and low and monthly precipitation.

Oct2026NovDecJan2027FebMarAprMayJunJulAugSep
Lowest fare–$334$259$160––––––––
High °C27°27°28°28°29°30°30°29°28°28°28°28°
Low °C19°18°18°19°19°19°19°19°19°19°19°18°
Precipitation mm331136346101480268280182277355

Source: San José, Costa Rica on Wikipedia, CC BY-SA 4.0.

Questions travellers ask

What is the cheapest month to fly from Seattle to San Jose?

In the fares found this week, January 2027 has the lowest: from $160 one-way, against $334 in November.

What is the weather in San Jose in January 2027?

In January 2027, the cheapest month to fly, the average daily high in San Jose is 28 °C and the low 19 °C.

Are there direct flights from Seattle to San Jose?

None of the fares found recently are nonstop. The cheapest options have at least one stop.

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