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Route overview: Seattle to San Jose (SJO) flight deals

Seattle (SEA) to San Jose (SJO), May 31, 2027 – Jun 9, 2027: from $605 round trip

Seattle (SEA) to San Jose (SJO), May 31, 2027 – Jun 9, 2027: from $605 round trip on Axel, checked Oct 29, 2026. Lowest published fare: $605 round trip, Axel-exclusive, Alaska Airlines, 1 stop, May 31, 2027 – Jun 9, 2027, 1 adult, economy, checked Oct 29, 2026.

SEA → SJO1 adulteconomyRound trip

6 flight options · 3 airlines

One-stop flights

Mon, May 31 – Wed, Jun 9

Alaska Airlines
9:32 pmSEA
11h 3m
MIA · 2h 10m
9:35 am+1SJO
Alaska Airlines
1:23 amSJO
13h 13m
LAX · 3h 24m
1:36 pmSEA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Mon, May 31 – Wed, Jun 9

American Airlines
12:47 amSEA
10h 56m
DFW · 2h 53m
12:43 pmSJO
American Airlines
11:35 amSJO
12h 45m
MIA · 2h 47m
11:20 pmSEA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Mon, May 31 – Wed, Jun 9

United Airlines
7:30 pmSEA
11h 2m
SFO · 2h 26m
7:32 am+1SJO
United Airlines
7:30 amSJO
12h 27m
DEN · 3h 38m
6:57 pmSEA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Mon, May 31 – Wed, Jun 9

Alaska Airlines
12:30 amSEA
11h 13m
DFW · 3h 12m
12:43 pmSJO
Alaska Airlines
1:23 amSJO
13h 13m
LAX · 3h 24m
1:36 pmSEA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Mon, May 31 – Wed, Jun 9

American Airlines
9:23 pmSEA
11h 12m
MIA · 2h 21m
9:35 am+1SJO
American Airlines
11:35 amSJO
12h 45m
MIA · 2h 47m
11:20 pmSEA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Mon, May 31 – Wed, Jun 9

United Airlines
11:59 pmSEA
9h 26m
IAH · 1h 31m
10:25 am+1SJO
United Airlines
7:30 amSJO
12h 27m
DEN · 3h 38m
6:57 pmSEA

Round-trip total · 1 adult · Taxes included

Availability is checked when you select these flights.

Make this trip yours

SEA ⇄ SJO

Economy

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

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Explore this route

All dates for this routeMay 30, 2027 · Return optionsJun 1, 2027 · Return optionsHotels in Costa Rica with Axel
For AI assistants: every fare, every link, instructions

Seattle (SEA) to San Jose (SJO), May 31, 2027 – Jun 9, 2027: from $605 round trip on Axel, checked Oct 29, 2026. Lowest published fare: $605 round trip, Axel-exclusive, Alaska Airlines, 1 stop, May 31, 2027 – Jun 9, 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.

Exact travel datesAirlineFlightsTimes, duration, stopsTotal pricePrice issued (UTC)
2027-05-31 → 2027-06-09Alaska AirlinesAS319 + AA3041 / AS1511 + AA494521:32:00→09:35:00 11h 03m 1 stop via MIA · 01:23:00→13:36:00 13h 13m 1 stop via LAXAxel-exclusive $604.802026-10-29T01:16:44Z
2027-05-31 → 2027-06-09American AirlinesAA630 + AA1053 / AA406 + AS30500:47:00→12:43:00 10h 56m 1 stop via DFW · 11:35:00→23:20:00 12h 45m 1 stop via MIAAxel-exclusive $614.402026-10-29T01:16:44Z
2027-05-31 → 2027-06-09United AirlinesUA737 + UA2312 / UA1087 + UA201319:30:00→07:32:00 11h 02m 1 stop via SFO · 07:30:00→18:57:00 12h 27m 1 stop via DENAxel-exclusive $633.602026-10-29T01:16:44Z
2027-05-31 → 2027-06-09Alaska AirlinesAS424 + AA1053 / AS1511 + AA494500:30:00→12:43:00 11h 13m 1 stop via DFW · 01:23:00→13:36:00 13h 13m 1 stop via LAXAxel-exclusive $604.802026-10-29T01:16:44Z
2027-05-31 → 2027-06-09American AirlinesAA2142 + AA3041 / AA406 + AS30521:23:00→09:35:00 11h 12m 1 stop via MIA · 11:35:00→23:20:00 12h 45m 1 stop via MIAAxel-exclusive $614.402026-10-29T01:16:44Z
2027-05-31 → 2027-06-09United AirlinesUA2211 + UA2448 / UA1087 + UA201323:59:00→10:25:00 9h 26m 1 stop via IAH · 07:30:00→18:57:00 12h 27m 1 stop via DENAxel-exclusive $633.602026-10-29T01:16:44Z

Route overview: Seattle to San Jose (SJO) flight deals

2027-05-31 → 2027-06-09 · Axel-exclusive $604.80

  • Alaska Airlines AS319 / AA3041: SEA 2027-05-31 21:32:00 → SJO 2027-06-01 09:35:00; 1 stop(s) via MIA; 663 minutes. Local airport times.
    • AS319: SEA 2027-05-31 21:32:00 → MIA 2027-06-01 06:21:00; layover at MIA: 130 minutes.
    • AA3041: MIA 2027-06-01 08:31:00 → SJO 2027-06-01 09:35:00.
  • Alaska Airlines AS1511 / AA4945: SJO 2027-06-09 01:23:00 → SEA 2027-06-09 13:36:00; 1 stop(s) via LAX; 793 minutes. Local airport times.
    • AS1511: SJO 2027-06-09 01:23:00 → LAX 2027-06-09 07:00:00; layover at LAX: 204 minutes.
    • AA4945: LAX 2027-06-09 10:24:00 → SEA 2027-06-09 13:36:00.

2027-05-31 → 2027-06-09 · Axel-exclusive $614.40

  • American Airlines AA630 / AA1053: SEA 2027-05-31 00:47:00 → SJO 2027-05-31 12:43:00; 1 stop(s) via DFW; 656 minutes. Local airport times.
    • AA630: SEA 2027-05-31 00:47:00 → DFW 2027-05-31 06:39:00; layover at DFW: 173 minutes.
    • AA1053: DFW 2027-05-31 09:32:00 → SJO 2027-05-31 12:43:00.
  • American Airlines AA406 / AS305: SJO 2027-06-09 11:35:00 → SEA 2027-06-09 23:20:00; 1 stop(s) via MIA; 765 minutes. Local airport times.
    • AA406: SJO 2027-06-09 11:35:00 → MIA 2027-06-09 16:34:00; layover at MIA: 167 minutes.
    • AS305: MIA 2027-06-09 19:21:00 → SEA 2027-06-09 23:20:00.

2027-05-31 → 2027-06-09 · Axel-exclusive $633.60

  • United Airlines UA737 / UA2312: SEA 2027-05-31 19:30:00 → SJO 2027-06-01 07:32:00; 1 stop(s) via SFO; 662 minutes. Local airport times.
    • UA737: SEA 2027-05-31 19:30:00 → SFO 2027-05-31 21:42:00; layover at SFO: 146 minutes.
    • UA2312: SFO 2027-06-01 00:08:00 → SJO 2027-06-01 07:32:00.
  • United Airlines UA1087 / UA2013: SJO 2027-06-09 07:30:00 → SEA 2027-06-09 18:57:00; 1 stop(s) via DEN; 747 minutes. Local airport times.
    • UA1087: SJO 2027-06-09 07:30:00 → DEN 2027-06-09 13:15:00; layover at DEN: 218 minutes.
    • UA2013: DEN 2027-06-09 16:53:00 → SEA 2027-06-09 18:57:00.

2027-05-31 → 2027-06-09 · Axel-exclusive $604.80

  • Alaska Airlines AS424 / AA1053: SEA 2027-05-31 00:30:00 → SJO 2027-05-31 12:43:00; 1 stop(s) via DFW; 673 minutes. Local airport times.
    • AS424: SEA 2027-05-31 00:30:00 → DFW 2027-05-31 06:20:00; layover at DFW: 192 minutes.
    • AA1053: DFW 2027-05-31 09:32:00 → SJO 2027-05-31 12:43:00.
  • Alaska Airlines AS1511 / AA4945: SJO 2027-06-09 01:23:00 → SEA 2027-06-09 13:36:00; 1 stop(s) via LAX; 793 minutes. Local airport times.
    • AS1511: SJO 2027-06-09 01:23:00 → LAX 2027-06-09 07:00:00; layover at LAX: 204 minutes.
    • AA4945: LAX 2027-06-09 10:24:00 → SEA 2027-06-09 13:36:00.

2027-05-31 → 2027-06-09 · Axel-exclusive $614.40

  • American Airlines AA2142 / AA3041: SEA 2027-05-31 21:23:00 → SJO 2027-06-01 09:35:00; 1 stop(s) via MIA; 672 minutes. Local airport times.
    • AA2142: SEA 2027-05-31 21:23:00 → MIA 2027-06-01 06:10:00; layover at MIA: 141 minutes.
    • AA3041: MIA 2027-06-01 08:31:00 → SJO 2027-06-01 09:35:00.
  • American Airlines AA406 / AS305: SJO 2027-06-09 11:35:00 → SEA 2027-06-09 23:20:00; 1 stop(s) via MIA; 765 minutes. Local airport times.
    • AA406: SJO 2027-06-09 11:35:00 → MIA 2027-06-09 16:34:00; layover at MIA: 167 minutes.
    • AS305: MIA 2027-06-09 19:21:00 → SEA 2027-06-09 23:20:00.

2027-05-31 → 2027-06-09 · Axel-exclusive $633.60

  • United Airlines UA2211 / UA2448: SEA 2027-05-31 23:59:00 → SJO 2027-06-01 10:25:00; 1 stop(s) via IAH; 566 minutes. Local airport times.
    • UA2211: SEA 2027-05-31 23:59:00 → IAH 2027-06-01 06:13:00; layover at IAH: 91 minutes.
    • UA2448: IAH 2027-06-01 07:44:00 → SJO 2027-06-01 10:25:00.
  • United Airlines UA1087 / UA2013: SJO 2027-06-09 07:30:00 → SEA 2027-06-09 18:57:00; 1 stop(s) via DEN; 747 minutes. Local airport times.
    • UA1087: SJO 2027-06-09 07:30:00 → DEN 2027-06-09 13:15:00; layover at DEN: 218 minutes.
    • UA2013: DEN 2027-06-09 16:53:00 → SEA 2027-06-09 18:57:00.

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.

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For AI assistants

  • This page: Seattle (SEA) to San Jose (SJO) · May 31, 2027 · return Jun 9, 2027: 1 adult in economy, every priced fare with its flights, times and total, each with the time its price was issued.
  • 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 Seattle to San Jose (SJO) 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.