Cheap flights from Dulles Intl (IAD) to Porto (OPO)
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How to find the cheapest flight from
Dulles Intl (IAD) to Porto (OPO)
All the information you need to plan the best IAD to OPO flight in 2022: compare Dulles Intl to Porto flight prices with the expected peak season, weather and rainfall in Porto.
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IAD - OPO Price
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$395 - $1,120
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OPO Temperature
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48.2 - 68 °F
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OPO Rainfall
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0.7 - 7.7 inches
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Popular in August High demand for flights, 51% potential price rise |
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Cheapest in September Best time to find cheap flights, 28% potential price drop |
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Average price $666 Average for round-trip flights in July 2022 |
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Round-trip from $395 From Washington, D.C. Dulles Intl to Porto |
When is the cheapest time to fly from Washington, D.C. Dulles Intl Airport to Porto (IAD - OPO)?
When flying from Washington, D.C. Dulles Intl Airport to Porto, the time of day you decide to fly out makes little to no difference towards the overall price you’ll pay on tickets.
How far in advance should I book a flight from Washington, D.C. Dulles Intl Airport to Porto?
When searching for a good deal, it’s best to be prepared for potential fluctuations in price. We recommend booking at least 61 days in advance, which can save you up to 12% on flights from Washington, D.C. Dulles Intl Airport to Porto compared to booking the week you need them. Waiting 61 days out may not be for everyone, so we have options available for flights within the next two weeks, with the lowest price starting at $529. For sooner than that we have options available in the next 3 days from $529.
What is the cheapest month to fly from Washington, D.C. Dulles Intl Airport to Porto?
September is one of the best times of the year to fly to Porto from Washington, D.C. Dulles Intl Airport. Prices for September average $511 per person but you can even find prices for as low as $355. The most expensive prices can be found in the month of December. Opting for a September flight can save you 75% on your journey compared to booking in December
Cheap flights from Dulles Intl to Porto in July, August 2022
The best prices found for IAD to OPO flights for July, August
Washington, D.C. Dulles Intl to Porto 2022 flight deals
Cheap flights to Porto from Dulles Intl found for this year
Cheap Iberia flights from Dulles Intl to Porto
Cheap Lufthansa flights from Dulles Intl to Porto
Last minute flights from Dulles Intl to Porto
Late deals on round-trip flights to Porto from Dulles Intl, departing today and this week
One-way flights to Porto from Washington, D.C. Dulles Intl
The cheapest one-way flights from Dulles Intl to Porto
Related info for your journey
Useful info, stats and facts about <span class="emphasized">Dulles Intl</span> to <span class="emphasized">Porto</span> flights.
COVID Restrictions
View COVID Travel Restrictions for Porto, PortugalAlternative routes for Dulles Intl to Porto
See prices for flight routes from nearby airports that may be better suited for you.
Top 7 airlines flying from Washington, D.C. Dulles Intl to Porto
The chart below displays the airlines Cheapflights users traveling from Dulles Intl to Porto choose most often. Cheapest and average prices are based on aggregated data from the past 12 months.
| Airline | Cheapest | Average | Flexibility | On-time | COVID-19 safety | |
|---|---|---|---|---|---|---|
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$378 | $606 | No cancel fee | N/A | ||
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$389 | $402 | No cancel fee | 77% | ||
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$398 | $549 | No cancel fee | 76% | ||
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$399 | $473 | No cancel fee | 69% | ||
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$400 | $405 | No cancel fee | 71% | ||
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$414 | $467 | No cancel fee | N/A | ||
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$446 | $460 | No cancel fee | 70% |