Cheap flights from Washington, D.C. to Portland from $141

The cheapest month to fly to Portland from Washington, D.C. is in January. Flight prices, which tend to average around $381, are often lower during this time because this is during the off-season. If you don’t want to visit Portland in January, then you should wait until February to fly from Washington, D.C., when ticket prices are also cheap, with an average price of $383.

The cheapest day to depart on your flight to Portland is on a Saturday when prices can be found for as low as $459. This is often the case because there is less demand to fly during this day of the week. The most expensive day to fly to Portland is Sunday, with ticket prices averaging around $618.

The cheapest time of day to fly to Portland is in the evening when flights can be purchased for as low as $397. In the afternoon is when there is more demand to fly to Portland, so prices are often more expensive at around $518 per ticket.

Fly from Washington, D.C. Reagan-National to Portland for the best Washington, D.C. - Portland flight prices

You are more likely to see cheaper flights to Portland from Washington, D.C. when booking weeks ahead of your departure date. In general, you can expect to find flights to Portland for around $474 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Portland from Washington, D.C. for as low as $376 on momondo.

There are 4 cabin classes available to choose from on Washington, D.C. to Portland flights. Cabin price and availability will vary by airline so perform a search above to find the right deals for you.

You could potentially save up to 6% on your flight if you consider stops on a Washington, D.C. to Portland flight.

As of August 2026, prices for Washington, D.C. to Portland flights are approximately 31% more expensive when compared to flights at the same time last year.

Southwest, United Airlines, and Alaska Airlines are the most popular carriers operating from Washington, D.C. to Portland

United Airlines, Alaska Airlines and Delta are the top three most popular airlines that fly to Portland from Washington, D.C. according to our data. United Airlines is the first choice among our users, with 47% of people opting to fly with this airline when traveling to Portland. Keep in mind that there are 6 different airlines that fly to Portland on a routine basis, so you have a few additional options to choose from.

Chicago (ORD) was the most common stop: 20% of momondo users choosing 1-stop flights on this route connected there.

Flights via Las Vegas (LAS) offer the lowest average round-trip price of $261.

Flights connecting via Seattle (SEA) have the shortest average one-way travel time: 8h 09m.

Chicago (ORD) has the shortest average layover time for this route: 1h 25m.

As of August 2026, 2 flights take off from Washington, D.C. and land in Portland each day. The most common flight departure time for this route is 5:00PM, with 95% of daily flights taking off in the afternoon.

As of August 2026, there are 20 flights per week flying from Washington, D.C. to Portland. The most common day of the week flights depart is Sat, with 25% of flights taking off on this day.