Cheap Flights from Washington, D.C. to Porto
No deal from Washington, D.C. to Porto has cleared our price bar yet. What we have seen on the route is below.
Across 3 months of observations from Washington, D.C. to Porto, the lowest round-trip fare we recorded was $555, in September. The typical fare was $626. September was the cheapest month we saw and August the dearest.
The most recent price we saw on this route was $608 on Tap Air Portugal, seen Oct 17. It is an unverified observation and may have changed.
See every deal <a href="/from/washington-dc">from Washington, D.C.</a>, <a href="/to/porto">to Porto</a>, or the return direction <a href="/from/porto/to/washington-dc">Porto to Washington, D.C.</a>.
Latest price we saw: Washington, D.C. to Porto
The most recent round-trip fare our sweep found on this route. It is not verified and may have changed since the date shown.
| From | Price | Per mile | Travel dates | Airline | Seen | Check price |
|---|---|---|---|---|---|---|
| Washington, D.C. (IAD) to Porto (OPO) | $608 | 8.6¢ | Oct 26 – Nov 4 | Tap Air Portugal | Oct 17 | Check price |
Price history: Washington, D.C. to Porto
What we observed by month, from our signals database. Unverified observations, not bookable prices.
| Month | Low | Typical | Sightings |
|---|---|---|---|
| Oct 2026 | $608 | $608 | 39 |
| Sep 2026 | $555 | $587 | 98 |
| Aug 2026 | $669 | $682 | 187 |
Frequently asked questions
How many flight deals from Washington, D.C. to Porto are on Sparkflights right now?
There are 0 verified deals from Washington, D.C. to Porto on the board right now. The list refreshes hourly.
What is the lowest price ever seen from Washington, D.C. to Porto?
The lowest fare we've recorded from Washington, D.C. to Porto is $555, based on 324 price observations over 3 months.
How much does a flight from Washington, D.C. to Porto cost?
The typical round-trip fare we observed from Washington, D.C. to Porto is $626, against a recorded low of $555. These are observations, not quotes.
When is the cheapest month to fly Washington, D.C. to Porto?
September was the cheapest month we observed from Washington, D.C. to Porto and August the dearest, over 3 months of data.
What is the current price from Washington, D.C. to Porto?
The most recent fare our sweep saw from Washington, D.C. to Porto is $608, on Oct 17. It is an unverified observation rather than a verified deal, so check it before booking.