Cheap flights from Washington to San José (IAD–SJO)
IADWashington Dulles International Airport
United States
United States
SJOJuan Santamaría International Airport
Costa Rica
Costa Rica
Avianca Costa Rica and United Airlines fly Washington to San José (IAD–SJO) nonstop and back, a great-circle distance of 3,290 km (2,040 mi).
- From
- IAD
- Washington
- To
- SJO
- San José
- Nonstop
- Yes · 2 airlines
- Airlines
- LR · UA
- Cheapest fare found
- $167 one-way
- Distance
- 3,290 km (2,040 mi)
- Time difference
- San José 2 hours behind
Network data imported from airport and airline sources:· How we verify
Washington to San José fares by month
Cheapest one-way fare found: $167 for October 2026 on United Airlines (1 stop).
- Oct ’26$167
Cheapest one-way fares per month of departure in the Aviasales price cache, found . Fares change by the hour: the live fare is shown when you search.
When to fly IAD–SJO
Days in San José average 18–28 °C in September, October, November and December. Set your watch 2 hours back on landing at SJO.
Washington to San José: frequently asked questions
Fares: Aviasales price cache, 8 October 2026.
How much is a flight from Washington Dulles (IAD) to San José Juan Santamaría (SJO)?
From $167 one-way, the cheapest fare found for October 2026 on United Airlines with 1 stop (found 8 October 2026).
Which airlines fly IAD–SJO direct?
Avianca Costa Rica and United Airlines.
What is the time difference between Washington and San José?
San José is 2 hours behind Washington: a IAD departure at noon is 10:00 local time in SJO.
San José to Washington: the return flight (SJO–IAD)
All 2 airlines also fly SJO–IAD nonstop.
Airlines flying IAD–SJO nonstop
| Airline | Usually takes off (IAD time) | Type | Alliance | Notes |
|---|---|---|---|---|
 Avianca Costa Rica LR | — | full-service | Star Alliance | — |
| United Airlines UA | — | full-service | Star Alliance | Seasonal |
One-stop alternatives to flying IAD–SJO nonstop
One airline on both legs; check it's sold as one ticket.
- Via Orlando (MCO) with
Frontier Airlines: 3,290 km (2,050 mi) flown, almost no further than nonstop. - Via Charlotte (CLT) with
American Airlines: 3,340 km (2,080 mi) flown, 2% further than nonstop. - Via Atlanta (ATL) with
Delta Air Lines and Frontier Airlines: 3,490 km (2,170 mi) flown, 6% further than nonstop. - Via Panama City (PTY) with
Copa Airlines: 3,870 km (2,400 mi) flown, 18% further than nonstop. - Via Newark (EWR) with United Airlines: 3,890 km (2,420 mi) flown, 18% further than nonstop.
IAD–SJO route map
More from Washington and San José
Explore the airlines’ route maps
Plan your arrival at Juan Santamaría International Airport (SJO)
Departure
Washington Dulles International Airport
Washington Dulles (IAD), Washington. In our data, 47 airlines fly nonstop from IAD to 117 destinations.
View IAD airport guide →Arrival
Juan Santamaría International Airport
Juan Santamaría (SJO), San José.
Onward from San José
Places you can't fly to nonstop from IAD, but can from SJO — for a stopover or a second leg.
Related routes
Sources
- en.wikipedia.org — airlines and destinations, checked 2026-10-01
- en.wikipedia.org — airlines and destinations, checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
- en.wikipedia.org — airlines and destinations table (passenger), checked 2026-10-01
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