Cheap flights from Washington to Porto from $322
This is the cheapest one-way flight price found by a momondo user in the last 72 hours by searching for a flight from Washington to Porto departing on 10/22. Fares may change, and may not be available for all flights or travel dates. Click the price to refresh the search for this deal.
Discover deals from 900+ travel sites with momondo.
Save money when you book flights with momondo
Big names and deals
Big names and deals
Search 100s of travel sites to compare prices.Filter for what you want
Filter for what you want
Free Wi-Fi? Stopover? Instantly customize your results.Trusted and free
Trusted and free
We’re completely free to use - no hidden charges or fees.Price Alerts
Price Alerts
Not ready to book? to track prices.Find the cheapest flights from Washington to Porto
Cheap round-trip flights
Cheap one-way flights
Cheap last minute flights
Air Canada flights from State of Washington to Porto
Our best Air Canada deals on State of Washington to Porto flight tickets
United Airlines flights from State of Washington to Porto
Our best United Airlines deals on State of Washington to Porto flight tickets
See travel insights to Porto from
How to get the cheapest flight ticket from State of Washington to Porto
Look no further. We've gone through all the searches for this route on momondo so you have the important information and insights to find the cheapest flight ticket for your trip
What is the cheapest month to fly to Porto?
The month of January is, on average, the cheapest month to fly to Porto from State of Washington, with most prices found around $769. If you aren’t able to travel during the month of January, then book flights to Porto from State of Washington during March instead. Flights to Porto in March, while not as cheap as those in January, still average around $790.
What is the cheapest day to depart on your flight to Porto?
The cheapest day to depart on your flight to Porto is on a Tuesday when prices can be found for as low as $1,008. This is often the case because there is less demand to fly during this day of the week. If your travel schedule is flexible, try to avoid departing on a Thursday because tickets tend to average around $1,286. These prices are subject to change though, so be sure to set up a Price Alert for flights to Porto.
What is the cheapest time of day to depart on your flight to Porto?
In the evening is the cheapest time of day to fly from State of Washington to Porto when you can find flight prices for as low as $837. Flying to Porto in the evening is an ideal time because this is during off-peak travel hours. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $1,130 on average. Flights to Porto from State of Washington in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.
How far in advance should I book a flight to Porto?
You are more likely to see cheaper flights to Porto from State of Washington when booking weeks ahead of your departure date. In general, you can expect to find flights to Porto for around $1,035 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Porto from State of Washington for as low as $804 on momondo.
What is the cheapest airline that flies from Washington to Porto?
United Airlines, KLM, and Delta are the most popular carriers operating from Washington to Porto
What airlines fly to Porto?
KLM, United Airlines and Delta are the top three most popular airlines that fly to Porto from State of Washington according to our data. KLM is the first choice among our users, with 32% of people opting to fly with this airline when traveling to Porto. Keep in mind that there are 6 different airlines that fly to Porto on a routine basis, so you have a few additional options to choose from.
Cheap State of Washington to Porto flight deals and tips
Find info about flight duration, direct flights, and airports for your flight from State of Washington to Porto
When did momondo last update prices for flights from Washington to Porto Airport?
Prices for flights from Washington to Porto Airport are updated daily.
How many operators does momondo search for flights from Washington to Porto Airport?
There are 7 operators available for flights from Washington to Porto Airport as of June 2025.
How old do you have to be to fly from Washington to Porto Airport?
The minimum age for a child to fly alone is five, but airlines that offer an unaccompanied minor (UNMR) service may have their own age limitations. Flight duration, scheduling, and layovers are among the considerations that may influence age limits. We recommend that you double-check with the airline you are booking with for travel from Washington to Porto Airport.
What documentation or ID do you need to fly to Porto Airport?
The travel and health documents you'll need for your trip to Porto Airport may differ based on your itinerary and personal situation. Typically, you should have several documents on hand, such as a national ID card or driver's license and a passport that is valid for six months after your intended arrival at Porto Airport. It is always advisable to seek advice from your airline or a trusted third party, such as IATA.
Best airlines flying from State of Washington to Porto
Compare and see reviews for airlines that fly from State of Washington to Porto with momondo
| Airline | Rating | Free Cancellation | Price | ||
|---|---|---|---|---|---|
| PriceFrom $636 | Free Cancellation | Rating 8.0 7,964 reviews | |||
| PriceFrom $642 | Free Cancellation | Rating 6.8 7,158 reviews | |||
| PriceFrom $648 | Free Cancellation | Rating 7.8 1,364 reviews | |||
| PriceFrom $673 | Free Cancellation | Rating 6.6 7,031 reviews | |||
| PriceFrom $679 | Free Cancellation | Rating 7.4 8,810 reviews | |||
| PriceFrom $759 | Free Cancellation | Rating 7.3 3,853 reviews |
Traveling to a place near Porto?
Book flights to Porto if you plan to visit one of these locationsWhy use momondo?
Why should I use momondo to find a flight deal from Washington to Porto?
momondo collates all your flight options in one place and lets you filter them to find the perfect flight from Washington to Porto. momondo saves you time and could save you money on your trip.
Can I find flights from Washington to Porto with flexible booking policies on momondo?
momondo does allow users to show only those flights to Porto from Washington which offer a flexible booking policy as well as other useful filters and features.
How can momondo help me find flights from Washington to Porto?
momondo offers useful filters to help you find the right flight. Choose specific flight times, airports or even what payment method you prefer. We have numerous options to help you book your ideal flight from Washington to Porto.
I’m not ready to book a flight from Washington to Porto right now. Can momondo alert me if prices change?
Of course. momondo tracks the price of Washington to Porto flights. All you need is a valid email address and we will do the rest; it is that quick and easy.