The cheapest times to fly from SEA to LWS are

  • April 9th to April 29th
  • May 14th to July 22nd (except the weeks of June 18th and June 25th)
  • August 13th to September 16th
  • October 1st to November 18th

based on data collected exclusively by Champion Traveler across tens of millions of flights. Among all the dates above, the very cheapest time to fly from SEA to LWS is early November. Prices can be as high as $1010 for Sunday flights during mid December, or as low as $389 for Tuesday flights around early November.


When to Fly to Lewiston

Flying from Seattle, WA (SEA) to Lewiston, ID (LWS) will usually cost between $404 to $521 per person if booking more than four weeks in advance. On average the very cheapest time to fly is early November with an average ticket price of $420. Due to high demand the most expensive time to fly is mid December, with an average price of $592. Planning your trip to low-cost times can easily save you $172 on economy flights and even more on first-class flights. Generally, any price below $447 can be considered a good price for a round-trip SEA to LWS flight.

See below for a graph of average weekly prices for the SEA to LWS route. All prices are for round-trip tickets in USD.

SEA to LWS Flight Prices

Compared to other flights, the SEA to LWS flight is much cheaper than the average and costs much less than the average flight leaving from Seattle. The average price per mile (for a direct flight) is $1.06, which is above average.


Flight Prices by Day of the Week

Tuesday is usually the cheapest day to depart and return on this flight. Sundays are the most expensive days to fly out or take a return trip. Selecting flights on the least expensive days could save you up to $56 (12%) on this flight.

Departing prices are for round-trip flights returning on the day of departure. For example, a flight departing on Tuesday and returning a week later will cost an average of $422. Return trip prices are from the LWS to SEA flight, and often highlight the quality of our data in showing the same trend.

Departing Prices by Day

Departure Day Prices

Return Trip Prices by Day

Return Day Prices


Nonstop Flights and Layovers

Travelers looking to fly from SEA to LWS can generally find a 1-layover flight. Because there is not usually a direct flight option the real-world direct flight time of 1 hour 27 minutes may not be realistic.


Alternative Nearby Airports

Champion Traveler tells you which airports are nearby and whether tickets might be cheaper alternative airports nearby. Sometimes it’s worth it to fly into a closer airport and then commute to your destination. Remember that there is not usually a nonstop flight from SEA to LWS while comparing.

Destination alternative #1: Tri Cities Airport (PSC) in Pasco/Kennewick/Richland, WA

  • 101 miles (163 km) away from LWS
  • Usually 70.47% less expensive than LWS
  • Nonstop flights available

See SEA to PSC flights

Destination alternative #2: Spokane International Airport (GEG) in Spokane, WA

  • 89 miles (143 km) away from LWS
  • Usually 70.36% less expensive than LWS
  • Nonstop flights available

See SEA to GEG flights

Destination alternative #3: Walla Walla Regional Airport (ALW) in Walla Walla, WA

  • 64 miles (103 km) away from LWS
  • Usually 62.53% less expensive than LWS
  • Nonstop flights available

See SEA to ALW flights

Destination alternative #4: Pullman Moscow Regional Airport (PUW) in Pullman, WA

  • 26 miles (42 km) away from LWS
  • Usually 49.22% less expensive than LWS
  • Nonstop flights available

See SEA to PUW flights

Destination alternative #5: Missoula International Airport (MSO) in Missoula, MT

  • 144 miles (232 km) away from LWS
  • Usually 41.16% less expensive than LWS
  • Nonstop flights available

See SEA to MSO flights


Flight Questions Answered

Still have questions about flying from SEA to LWS? We’ve got answers.

Which airlines fly this route?

You can find 3 major airlines flying this route most often: Alaska, Delta, United, and potentially more during busy seasons.

How far away is it from Lewiston Nez Perce County Airport to Seattle/Tacoma International Airport?

The distance between the two airports is roughly 261 miles or 420 kilometers.

How long does it take to fly from SEA to LWS?

The real-world flight time for a nonstop SEA to LWS flight is about 1 hour 27 minutes.

How many flights go between Seattle, WA and Lewiston, ID?

It depends on the day of the week and the date, but a typical day might have around 42 available flights from SEA to LWS.


Airport Location Info


Departing Airport

Origination codeSEA
Origination airport nameSeattle/Tacoma International Airport
CitySeattle, WA
Countrythe United States

Return Airport

Destination codeLWS
Destination airport nameLewiston Nez Perce County Airport
CityLewiston, ID
Countrythe United States


Other Resources

Please note that while we’ve worked hard to analyzed tens of millions of flights to get you this data, we do not calculate current live prices or guarantee pricing. Please see our partners using the links above for current offers.