Seattle to Valencia Flights from HKD 390 incl. tax

Based on HopeGoo data, United Airlines offers one-way fares as low as US$274 on Cheapest nonstop routes (e.g. SEA to VLC on Tue, Mar 31), while British Airways offers Cheapest nonstop round-trips from US$455 departing on Wed, Apr 15 and returning on Wed, Apr 22.

By analyzing data from all airlines on the HopeGoo flight calendar, it looks like the best time to book a flight from Seattle to Valencia is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.

To find best deals on flights from Seattle to Valencia, you can use various tools on HopeGoo: · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Tue, Mar 31, with one-way flights priced at just US$274. · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is United Airlines. · Set up price alerts to easily monitor ticket prices without having to check every day. · Check HopeGoo flight deals and promo codes frequently. · Avoid peak season unless you book very early. It seems the peak season for Valencia travel is around July. · Get exclusive promo codes for HopeGoo app users.

The cheapest months to fly from Seattle to Valencia is November, when demand for travel is lower.

After crunching the numbers on our March flight calendar, it's currently cheapest to fly from Seattle to Valencia on March 15, 2026 with Lufthansa, with prices starting at US$609.

The time difference between Valencia and Seattle is 9h.

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