CA $247 Cheap Flights from Boston (BOS) to Seattle (SEA)

You can find cheap one-way flights from CA $247 and cheap return flights CA $491 BOS to SEA with Expedia. One-way flights typically cost between CA$291 and CA$1178. Flight prices vary based on the month and day of the week you want to travel, as well as the airline and how far in advance you book your ticket. Filter your search on Expedia by "Price (lowest to highest)" to see the cheapest fares first, and use the Price Tracking tool to receive alerts when BOS to SEA ticket fares go up or down.

The cheapest months to fly from Boston, MA (BOS) to Seattle, WA (SEA) are typically during off-peak season when demand is low. Traveling in off-peak or shoulder months is usually a good way to secure cheap tickets, just remember to avoid flying during holidays if you are able to. Use the calendar view in your search to see which months have low fares on this route.

There are 3 airlines offering direct flights from Boston, MA (BOS-Logan Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.). Here are the top carriers:
* Delta operates 27 direct flights from Boston, MA (BOS-Logan Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) every week.
* JetBlue Airways operates 11 direct flights from Boston, MA (BOS-Logan Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) every week.
* Japan Airlines operates 7 direct flights from Boston, MA (BOS-Logan Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) every week.

To find a cheap flight from Boston, MA (BOS-Logan Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.), be flexible with your dates. Traveling outside of peak vacation months and booking a mid-week flight can help you save. Early morning and late night flights are often more affordable, too. Expedia allows you to compare flight times, airlines and routes all in one place to find low fares. You can also set up Price Tracking and receive alerts when fares go up or down.

The best airline to fly with from Boston, MA (BOS-Logan Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) will differ from traveler to traveler. If you like to fly early, Alaska Airlines offers early morning flights. If price is the most important factor, JetBlue Airways typically offers the lowest fares. American Airlines offers the most daily flights from Boston, MA (BOS-Logan Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.), which is great if flexibility is what you value most. The best carrier for this journey could also be the one you have a loyalty membership with, as flying with that airline or another airline within the same alliance could help you collect points or enjoy lounge access.

The best time to fly is usually mid-week (Tuesday or Wednesday) and during early morning hours as flights tend to be cheaper, less crowded, and generally more on-time. Avoid major holidays and peak vacation seasons for smoother travel. Combining off-peak days and hours often gives the best combination of cost, comfort, and convenience.

You'll find approximately 5 nonstop flights per day from Boston, MA (BOS-Logan Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.). For even more choices, look at flights that include layovers, as there are around 163 connecting flights per day. Some common connection points include O'Hare Intl. (ORD), Baltimore Washington Intl. Thurgood Marshall (BWI), and Denver Intl. (DEN).

The earliest flight from Boston, MA (BOS-Logan Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) typically departs around 5:00 AM. This service is operated by American Airlines. This is a seasonal service, active in June, July, and August. An early departure like this can help you make the most of your time at your destination. To compare early flights on Expedia, select the "Early Morning" and "Morning" filters in your search.

You'll find the most flights from Boston, MA (BOS-Logan Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) on Fridays, with around 112 flights available. This gives you plenty of options for your travel plans. Major airlines on this route include American Airlines, United, and Delta. Fridays typically have notably more flight options compared to other days of the week, offering you greater flexibility.

The most popular departure times for flights from Boston, MA (BOS-Logan Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) are in the morning, from 6am to 9am. Many major carriers, including Alaska Airlines, Delta and American Airlines, offer flights during this window. Many travellers prefer these early morning flights as they allow you to arrive at your destination with plenty of time to settle in or start your day.

Flying nonstop from BOS to SEA takes around 6 hours 30 minutes, with the route covering approximately 4,004 kilometers. Flights with a layover typically take 3 hours longer than direct options. Keep in mind that actual flight times can vary due to wind patterns, weather, and air traffic.

Yes, you can fly business class or first class between BOS and SEA.

Airlines that offer business class service on this route include:

* Alaska Airlines
* Delta
* American Airlines

First class cabins are available on:

* Alaska Airlines
* Delta
* United
* American Airlines

A non-stop, one-way business class flight from Boston, MA (BOS-Logan Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) is usually around CA$1,108 - CA$1,653. Prices often fluctuate based on seasonality and how early you book. You may also be able to find a cheaper business class journey between Boston, MA (BOS-Logan Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) if you opt for a connecting flight.

It's easy to earn miles on a Boston, MA (BOS) to Seattle, WA (SEA) flight when you book with Expedia. Before you confirm your booking, simply select your frequent flyer program and enter your program number. As a member of One Key™, you can also earn OneKeyCash™* on top of your airline miles when you book with Expedia.

*Excludes taxes and fees. OneKeyCash is not redeemable for cash and can only be used on Expedia and other participating brands.

If you're planning to travel to Seattle from Logan International Airport (BOS), you can fly directly into Seattle - Tacoma International Airport (SEA). Some flights may connect through major hubs like Seattle - Tacoma International Airport (SEA), San Diego International Airport (SAN), or Portland International Airport (PDX) before reaching Seattle. Compare routes and airports on Expedia to find the best flight options for your travel plans.

Typically, booking a last minute flight from Boston, MA (BOS) to Seattle, WA (SEA) will be more expensive than booking in advance. As the departure date approaches, there are usually fewer seats available which can drive up the cost. However, if there's some wiggle room with your travel dates and times, you could bag a cheap last-minute fare.

Securing a Boston, MA (BOS) to Seattle, WA (SEA) flight and hotel package is usually cheaper than booking separately. With Expedia, you can enjoy the ease of organizing your travels all in one place. Select from our extensive range of stays and then add flights, activities and car rentals to your booking. Bundle everything together, and you could save hundreds of dollars.

If you booked your Boston, MA (BOS-Logan Intl.) to Seattle, WA (SEA-Seattle - Tacoma Intl.) flight within the last 24 hours, you may be able to modify or cancel it without any fees. Depending on the airline and the type of ticket you have, additional charges may apply for changes beyond this timeframe. Airline policies and contact information can be found in your itinerary or confirmation email. Or, head to our Customer Service portal if you'd like more information.