Vuelos de United de Seattle (SEA) a Washington (DCA) desde $154

For information on any present Ronald Reagan Washington National Airport (DCA) quarantine requirements and travel advice, go to the Covid-19 Travel Advisor. Check before you arrange your flight, so you don’t get caught up en route.

Before you travel from Sea-Tac Airport to DCA with United Airlines, it’s probably a good idea to contact the airline for your terminal information. While your boarding pass should contain some of the relevant details, we can’t guarantee it.

United Airlines doesn’t provide direct flights between SEA and Ronald Reagan Washington National Airport (DCA), so get ready to make a stopover. If you have enough time between flights, hit the airport shops while you wait for your connection.

Indulge in some in-flight shut-eye and touch down at your destination relaxed and refreshed. You’ll have sufficient time to do so when traveling with United Airlines between SEA and DCA, with the average flight lasting 6 hours and 46 minutes.

You can select from approximately 3 United Airlines flights daily from SEA to DCA.

For more info about changing your flight to Ronald Reagan Washington National Airport (DCA), please visit our Customer Service Portal.

This just in! Airfares offered on Thursdays tend to be the cheapest, according to flight demand on Travelocity in 2021. Tuesday and Wednesday prices are also good, but you may want to prepare your budget if booking during the weekend, as data shows that is when prices are generally at their highest.

Frequent travelers may already know this, but earlier in the week can be the cheapest time to fly. In 2021, flights departing on a Monday were generally the cheapest of the week, whereas you may pay a premium for weekend flights when demand is usually high. On average, tickets were most expensive for Saturday departures, so if you need to fly out on a weekend, you might look for deals ahead of time.

Trying to figure out how early you should book your flight? It’s possible to start comparing international airfares on Travelocity up to 12 months in advance. However, it does depend on the carrier as not all airlines release their prices that far out. According to our 2021 flight demand trends, last minute planners can still bag a bargain with some of the cheapest fares appearing 0-2 weeks prior to their travel dates.*According to flight demand on Travelocity.com from January to December 2021. Savings are subject to change based on departure location, date and destination.