Find cheap airlines flights from Seattle to Halifax

You can choose from 1 airlines that fly from Seattle to Halifax, including WestJet, WestJet has lowest fares on this route.
WestJet logo WestJet
Airlines are determined based on actual purchased flight tickets from Seattle to Halifax according to previous 12 months data from Trip.com.

Find flight deals from Seattle to Halifax for the next 3 months. Book one way flights from $160 or round trip flights from $318.

Displayed flight fares from Seattle to Halifax are based on average prices across airlines for the next 3 months, according to the latest Trip.com database.

Flight Info | Seattle to Halifax

The distance between Seattle and Halifax is approximately 4,426.56 km. Based on Trip.com's data travel demand peaks in July. The off-season for travel is September.

Cheapest one-way flight price$160
Cheapest round-trip ticket price$318
Off-season for travelSeptember
Peak season for travelJuly
Flight distance4,426.56 km
Popular airlineWestJet
Flight statistics for the Seattle–Halifax route are based on aggregated booking data from Trip.com over the past 12 months.

Frequently Asked Questions

  • What are the cheapest flights from Seattle to Halifax (SEA-YHZ)?

    Based on Trip.com data, WestJet offers one-way fares as low as $160 on Cheapest nonstop routes (e.g. SEA to YHZ on Fri, May 29), while WestJet offers Cheapest nonstop round-trips from $318 departing on Tue, Apr 28 and returning on Thu, Apr 30.
  • At the moment, several airlines serve connecting flights from Seattle to Halifax, including: WestJet Selected airlines are based on historical data collected from flight bookings made by users on Trip.com within the last 90 days.
  • By analyzing data from all airlines on the Trip.com flight calendar, it looks like the best time to book a flight from Seattle to Halifax is around 40 days (6 weeks) in advance, and the best time to fly is usually on Tuesday, Wednesday, and Saturday. Tuesday typically offers the cheapest flights for departure, while Saturday offers the best return deals.
  • To find best deals on flights from Seattle to Halifax, you can use various tools on Trip.com:
    · Be flexible with your travel dates to get the cheapest flight deal. Now the cheapest flight deal is on Fri, May 29, with one-way flights priced at just $160.
    · Compare airlines strategically. Budget carriers often provide the lowest base fares, while we found the most affordable airline currently operating on this route is WestJet.
    · Set up price alerts to easily monitor ticket prices without having to check every day.
    · Check Trip.com flight deals and promo codes frequently.
    · Avoid peak season unless you book very early. It seems the peak season for Halifax travel is around July.
    · Get exclusive promo codes for Trip.com app users.
  • The cheapest months to fly from Seattle to Halifax is September, when demand for travel is lower.
  • After crunching the numbers on our April flight calendar, it's currently cheapest to fly from Seattle to Halifax on April 18, 2026 with United Airlines, with prices starting at $317.
  • You can land at any one of the following hubs in Halifax, with Seattle-Tacoma International Airport to Halifax Stanfield International Airport (SEA-YHZ) is by far the most common option on this route: Halifax Stanfield International Airport (YHZ).
  • The time difference between Halifax and Seattle is 4h.
  • Tickets can only be changed or canceled if permitted by airline policy. To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy. However, if the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.

Note: Prices shown on this page are estimated lowest price and include all taxes and fees found in the last 24 hours.

Book with no extra fees

Prices displayed in this page are all-inclusive prices (incl. taxes, fuel surcharge, civil aviation development fund, etc) with all fees confirmed before payment. Fees for luggage, meals, WLAN, or other additional services are also included as shown in the flight cards.

Real-time pricing updates

Prices, availability, and travel information on this page were updated within last 24 hours—even in real-time. The more popular the route, the more precise the data.

Change & Cancellation Policy

Trip.com displays flight cancellation and change policies for each flight ticket during the booking process, including fees and applicable conditions. Please check the following scenarios:
Voluntary cancellation/change:
To submit a change or cancellation request, go to the flight bookings page, select the option to change or cancel your booking, choose the relevant passengers and segment, and submit a request. Please note that additional charges may apply according to the airline ticket policy.
Cancellation/change due to a flight schedule change:
If the flight has been rescheduled and you would like to change or cancel your ticket, you can submit an involuntary cancellation request. For more details about change and cancellation policies, please check the customer support pages.