Seattle to Porto (OPO) flight deals
Compare Seattle to Porto (OPO) flights across upcoming months. See dated fares below, or choose your own dates and travelers.
Fare examples by month
Round-trip totals · Economy · USD. Choose a month to see the dates.
| Month | Travelers / trip length | Axel Member | Airline fare |
|---|---|---|---|
| November 2026 | 1 adult · 10 days | $537 | $603 |
| January 2027 | 1 adult · 10 days | $565 | $628 |
| April 2027 | 1 adult · 10 days | $555–$615 | $618–$690 |
| June 2027 | 1 adult · 10 days | $980–$1,008 | $1,091–$1,128 |
Flights from Seattle (SEA) · Seattle to Europe flight deals · Seattle to Portugal flight deals
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Fares observed September 21, 2026. USD for the travelers shown. Search a trip for current prices.
November 2026
1 adult · Economy · Round-trip totals
| Travel dates | Flights (out / return) | Axel Member | Airline fare | Search |
|---|---|---|---|---|
| Nov 3–13, 2026 · 10 days | 1 stop / 1 stop · 19h 0m / 14h 45m | $537 · Save $66 | $603 | Check Axel prices |
| Nov 10–20, 2026 · 10 days | 1 stop / 1 stop · 19h 0m / 14h 45m | $537 · Save $66 | $603 | Check Axel prices |
January 2027
1 adult · Economy · Round-trip totals
| Travel dates | Flights (out / return) | Axel Member | Airline fare | Search |
|---|---|---|---|---|
| Jan 3–13, 2027 · 10 days | 1 stop / 1 stop · 22h 30m / 14h 50m | $565 · Save $63 | $628 | Check Axel prices |
| Jan 10–20, 2027 · 10 days | 1 stop / 1 stop · 22h 30m / 14h 50m | $565 · Save $63 | $628 | Check Axel prices |
April 2027
1 adult · Economy · Round-trip totals
| Travel dates | Flights (out / return) | Axel Member | Airline fare | Search |
|---|---|---|---|---|
| Apr 3–13, 2027 · 10 days | 1 stop / 1 stop · 27h 0m / 18h 39m | $606 · Save $75 | $681 | Check Axel prices |
| Apr 3–13, 2027 · 10 days | 1 stop / 1 stop · 27h 0m / 13h 55m | $615 · Save $75 | $690 | Check Axel prices |
| Apr 10–20, 2027 · 10 days | 1 stop / 1 stop · 28h 35m / 17h 37m | $555 · Save $63 | $618 | Check Axel prices |
| Apr 10–20, 2027 · 10 days | 1 stop / 1 stop · 28h 35m / 13h 20m | $565 · Save $63 | $628 | Check Axel prices |
June 2027
1 adult · Economy · Round-trip totals
| Travel dates | Flights (out / return) | Axel Member | Airline fare | Search |
|---|---|---|---|---|
| Jun 3–13, 2027 · 10 days | 1 stop / 2 stops · 17h 30m / 20h 35m | $980 · Save $111 | $1,091 | Check Axel prices |
| Jun 3–13, 2027 · 10 days | 1 stop / 1 stop · 17h 30m / 13h 55m | $1,008 · Save $120 | $1,128 | Check Axel prices |
| Jun 10–20, 2027 · 10 days | 1 stop / 1 stop · 19h 25m / 14h 33m | $989 · Save $118 | $1,107 | Check Axel prices |
Non-members can also book and save on airline fares. Live search shows prices with and without Membership. Optional Membership: $15 for the first month, then $10/month. Cancel anytime.
More trips with saved fares
- Seattle to Porto (OPO): flights November 3–13, 2026
- Seattle to Porto (OPO): flights November 10–20, 2026
- Seattle to Porto (OPO): flights January 3–13, 2027
- Seattle to Porto (OPO): flights January 10–20, 2027
- Seattle to Porto (OPO): flights April 3–13, 2027
- Seattle to Porto (OPO): flights April 10–20, 2027
More dates by month
- September 2026
- October 2026
- November 2026
- December 2026
- January 2027
- February 2027
- March 2027
- April 2027
- May 2027
- June 2027
- July 2027
- August 2027
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