Cheap flights from Portland to District of Columbia from $165

In general, February is the cheapest month to fly from Portland to District of Columbia. Due to it being the ‘off-season’ during this time, you can expect flight prices to be around $374. If you don’t want to visit District of Columbia in February, then you should wait until January to fly from Portland, when ticket prices are also cheap, with an average price of $419.

The cheapest day to depart on your flight to District of Columbia is on a Thursday when prices can be found for as low as $529. This is often the case because there is less demand to fly during this day of the week. On the other hand, Monday is the most expensive day to depart from Portland because it is more convenient for both business and leisure travelers. As a result, prices tend to be around $687.

Flying to District of Columbia from Portland in the evening is the least expensive time of day to depart. momondo users have found prices as low as $545 when looking at flights departing in the evening. Flights to District of Columbia are more costly in the morning, with an average ticket price of $573. Departure times in the morning fall within the peak daily travel times, which is why tickets can be more expensive.

Fly from Portland to Baltimore/Washington for the best Portland - District of Columbia flight prices

You are more likely to see cheaper flights to District of Columbia from Portland when booking weeks ahead of your departure date. In general, you can expect to find flights to District of Columbia for around $449 when searching weeks out. However, flight prices might be lower outside of this timeframe. For example, people recently found flights to District of Columbia from Portland for as low as $328 on momondo.

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

Southwest, Frontier, and Delta are the most popular carriers operating from Portland to District of Columbia

Alaska Airlines, United Airlines and Delta are the top three most popular airlines that fly to District of Columbia from Portland according to our data. Alaska Airlines is the first choice among our users, with 39% of people opting to fly with this airline when traveling to District of Columbia. Keep in mind that there are 5 different airlines that fly to District of Columbia on a routine basis, so you have a few additional options to choose from.

2 flights are operational daily from Portland to District of Columbia as of September 2026. The most popular departure time for this route is 8:00AM, with 76% of flights per day taking off at noon.

As of September 2026, 19 flights take off from Portland and land in District of Columbia each week. The most common flight departure day for this route is Mon, with 16% of weekly flights taking off on this day.