Cheap flights from Portland to Washington, D.C. from $165

In general, January is the cheapest month to fly from Portland to Washington, D.C. Dulles Intl Airport. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $277. If you aren’t able to travel to Washington, D.C. Dulles Intl Airport during the month of January, then flying in February is also cheap. Prices for this month can be found on momondo for an average of $337.

Our data shows that Friday is the least expensive day to fly to Washington, D.C. Dulles Intl Airport. Tickets to fly out on this day can be as low as $522. When flying out on a Sunday, the most expensive travel day of the week, you can expect to see flight prices from Portland to Washington, D.C. Dulles Intl Airport for around $659.

Flying to Washington, D.C. Dulles Intl Airport from Portland in the evening is the least expensive time of day to depart. momondo users have found prices as low as $546 when looking at flights departing in the evening. If you have a flexible travel schedule, then try to avoid flying in the morning when prices are $579 on average. Flights to Washington, D.C. Dulles Intl Airport from Portland in the morning are generally more expensive because this time of day is more convenient for travelers’ schedules.

Fly from Portland to Washington, D.C. Dulles Intl for the best Portland - Washington, D.C. Dulles Intl flight prices

You are more likely to see cheaper flights to Washington, D.C. Dulles Intl Airport from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to Washington, D.C. Dulles Intl Airport for around $455 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to Washington, D.C. Dulles Intl Airport from Portland for as low as $328 on momondo.

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

No. A direct flight is the cheapest option for a flight between Portland to Washington, D.C. Dulles Intl Airport.

As of September 2026, prices for Portland to Washington, D.C. Dulles Intl Airport flights are approximately 16% more expensive when compared to flights at the same time last year.

Alaska Airlines and Delta are the most popular carriers operating from Portland to Washington, D.C. Dulles Intl

United Airlines, Delta and Alaska Airlines are the top three most popular airlines that fly to Washington, D.C. Dulles Intl Airport from Portland according to our data. United Airlines is the first choice among our users, with 83% of people opting to fly with this airline when traveling to Washington, D.C. Dulles Intl Airport. Keep in mind that there are 3 different airlines that fly to Washington, D.C. Dulles Intl Airport on a routine basis, so you have a few additional options to choose from.

As of September 2026, 2 flights take off from Portland and land in Washington, D.C. Dulles Intl Airport each day. The most common flight departure time for this route is 8:00AM, with 100% of daily flights taking off at noon.

As of September 2026, there are 16 flights per week flying from Portland to Washington, D.C. Dulles Intl Airport. The most common day of the week flights depart is Mon, with 25% of flights taking off on this day.