SEA - YHZ

$152 Find Cheap Flights from Seattle to Halifax

This is the cheapest one-way flight price found by a KAYAK user in the last 72 hours by searching for a flight from Seattle to Halifax departing on 9/4. Fares are subject to change and may not be available on all flights or dates of travel. Click the price to replicate the search for this deal.
1 adult
1 adult, Economy

KAYAK searches hundreds of travel sites at once for deals on flights to Halifax

 
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Halifax, as well as popular online travel agencies
These are the airlines KAYAK users have selected most often from within our search results in flight searches from Seattle to Halifax, as well as popular online travel agencies
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Flights Deals

Cheap Flights from Seattle to Halifax (SEA-YHZ)

 
Here are some of the best deals found on KAYAK recently from the most popular airlines for round-trip flights from Seattle to Halifax that are departing in the next months. While these flights were available on KAYAK in the last 72 hours, prices and availability are subject to change and deals may expire.
Discover the best prices for you by selecting your travel dates on KAYAK.

Recent round-trip flight deals from Seattle to Halifax

Wed, Sep 3 - Tue, Sep 9
WestJet Logo
1:50 pm - 7:13 amSEA-YHZ
13h 23m1 stop
WestJet Logo
8:00 am - 8:29 pmYHZ-SEA
16h 29m1 stop
$376WestJet
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Wed, Sep 3 - Sun, Sep 14
Air Canada Logo
7:15 am - 7:18 pmSEA-YHZ
8h 03m1 stop
Air Canada Logo
5:45 am - 1:06 pmYHZ-SEA
11h 21m2 stops
$386Air Canada
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Fri, Aug 8 - Wed, Aug 20
WestJet Logo
8:40 am - 9:45 pmSEA-YHZ
9h 05m1 stop
WestJet Logo
8:00 am - 12:58 pmYHZ-SEA
8h 58m1 stop
$387WestJet
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Wed, Sep 3 - Mon, Sep 8
Air Canada Logo
7:15 am - 7:18 pmSEA-YHZ
8h 03m1 stop
Air Canada Logo
5:25 am - 10:59 amYHZ-SEA
9h 34m1 stop
$388Air Canada
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Mon, Jun 23 - Sat, Jun 28
United Airlines Logo
11:21 pm - 2:03 pmSEA-YHZ
10h 42m1 stop
United Airlines Logo
5:00 pm - 11:59 pmYHZ-SEA
10h 59m1 stop
$454United Airlines
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Tue, Aug 19 - Wed, Aug 27
American Airlines Logo
12:45 am - 2:44 pmSEA-YHZ
9h 59m2 stops
American Airlines Logo
4:28 pm - 9:19 amYHZ-SEA
20h 51m2 stops
$456American Airlines
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Wed, Sep 3 - Tue, Sep 9
United Airlines Logo
7:10 am - 1:49 amSEA-YHZ
14h 39m3 stops
United Airlines Logo
12:05 pm - 10:20 pmYHZ-SEA
14h 15m2 stops
$500United Airlines
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Thu, Aug 7 - Wed, Aug 20
American Airlines Logo
12:45 am - 2:44 pmSEA-YHZ
9h 59m2 stops
American Airlines Logo
2:24 pm - 10:26 pmYHZ-SEA
12h 02m1 stop
$532American Airlines
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Mon, Sep 8 - Fri, Sep 19
Delta Logo
11:55 pm - 5:39 pmSEA-YHZ
13h 44m2 stops
Delta Logo
3:20 pm - 11:34 pmYHZ-SEA
12h 14m2 stops
$1,352Delta
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Wed, Aug 20 - Sun, Aug 31
Delta Logo
5:30 am - 10:40 pmSEA-YHZ
13h 10m2 stops
Delta Logo
8:30 am - 8:24 pmYHZ-SEA
15h 54m2 stops
$1,556Delta
Find Deal
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KAYAK's insights & trends for Seattle to Halifax flights

Get data-powered insights and trends into flights from Seattle to Halifax to help you find the cheapest flights, the best time to fly and much more.

What’s the cheapest day of the week to fly from Seattle to Halifax?

The average price of all round-trip flights from Seattle to Halifax clicked on KAYAK for each day over the last 12 months.

If your flying dates are flexible, you should consider flying to Halifax on a Monday, as we generally find the cheapest rates on that day for this route. On the other hand, Sunday is the most expensive day to fly from Seattle to Halifax. For your return ticket, we recommend flying on a Friday and avoiding Thursdays for the best deals.

What is the cheapest month to fly from Seattle to Halifax?

To calculate monthly average prices, KAYAK takes all prices for each month over the last year for round-trip flights from Seattle to Halifax, removes the top 0.1% to account for outliers, and then takes the median of all values for each month.

The cheapest month for flights from Seattle to Halifax is April, where tickets cost $260 (return) on average. On the other hand, the most expensive months are February and December, where the average cost of round-trip tickets is $789 and $764 respectively.

How far in advance should I book a flight from Seattle to Halifax?

To calculate weekly average prices, KAYAK takes all prices for each week before departure over the last year for round-trip flights from Seattle to Halifax, removes the top 0.1% to account for outliers, and then takes the average of all the values for each week.

To get a below average price on the flight from Seattle to Halifax, you should book around 4 weeks before departure. For the absolute cheapest price, our data suggests you should book 9 weeks before departure.

Good to know

Low seasonFebruary
High seasonAugust
Cheapest flight$152
Best time to beat the crowds but there is an average 37% increase in price.
Most popular time to fly and prices are also 8% lower on average.
Flight from Seattle to Halifax

When to book flights from Seattle to Halifax

Are your dates flexible? Find out the best times to travel from Seattle to Halifax based on our flight data from the last year. Discover the cheapest month and even day to fly.
Estimated round-trip price
KAYAK looks at all historical flight data for each date to provide a predicted price for one-way trips or round-trips with a duration up to 40 days. While we try to provide actual minimum prices for each date, some prices are predictions and actual prices may differ.

FAQs for booking flights from Seattle to Halifax

  • What is the cheapest flight from Seattle to Halifax?

    In the last 3 days, the lowest price for a flight from Seattle to Halifax was $152 for a one-way ticket and $376 for a round-trip.

  • Do I need a passport to fly between Seattle and Halifax?

    Yes

  • Which aircraft models fly most regularly from Seattle to Halifax?

    We unfortunately don’t have that data for this specific route.

  • Which airline alliances offer flights from Seattle to Halifax?

    Star Alliance, oneworld, and SkyTeam are the airline alliances operating flights between Seattle and Halifax, with Star Alliance being the most commonly used for this route.

  • Which is the best airline for flights from Seattle to Halifax, Delta or United Airlines?

    The two airlines most popular with KAYAK users for flights from Seattle to Halifax are Delta and United Airlines. With an average price for the route of $788 and an overall rating of 8.0, Delta is the most popular choice. United Airlines is also a great choice for the route, with an average price of $527 and an overall rating of 7.4.

  • How does KAYAK find such low prices on flights from Seattle to Halifax?

    KAYAK is a travel search engine. That means we look across the web to find the best prices we can find for our users. With over 2 billion flight queries processed yearly, we are able to display a variety of prices and options on flights from Seattle to Halifax.

  • How does KAYAK's flight Price Forecast tool help me choose the right time to buy my flight ticket from Seattle to Halifax?

    KAYAK’s flight Price Forecast tool uses historical data to determine whether the price for a flight to Halifax from Seattle is likely to change within 7 days, so travelers know whether to wait or book now.

  • What is the Hacker Fare option on flights from Seattle to Halifax?

    Hacker Fares allow you to combine one-way tickets in order to save you money over a traditional round-trip ticket. You could then fly to Halifax with an airline and back to Seattle with another airline. Booking your flights between Seattle and YHZ can sometimes prove cheaper using this method.

  • What is KAYAK's "flexible dates" feature and why should I care when looking for a flight from Seattle to Halifax?

    Sometimes travel dates aren't set in stone. If your preferred travel dates have some wiggle room, flexible dates will show you all the options when flying to Halifax from Seattle up to 3 days before/after your preferred dates. You can then pick the flights that suit you best.

Top 4 airlines serving from Seattle to Halifax

 
See real verified KAYAK customer reviews for airlines flying from Seattle to Halifax. Airline scores are aggregated from all reviews left by passengers on KAYAK after flying with an airline. KAYAK doesn’t show reviews that are older than 5 years. Learn how KAYAK collects reviews.
Need help choosing which airline to fly with from Seattle to Halifax? KAYAK airline reviews give an overall score for each airline based on loads of factors, including comfort, boarding, in-flight entertainment and more, to make your decision easier. See airline scores according to verified KAYAK customer reviews.
8.0
DeltaOverall score based on 7950 reviews
7.3Food
8.2Boarding
7.9Comfort
7.9Entertainment
8.5Crew
Airline reviews

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

10.0 ExcellentHartaj, Jun 2025EWR - RDU
Read more Delta reviews

Great service. Flight was delayed while we sat on the runway for a couple of hours. Weather related. Staff made is very bearable. The steward servicing the first class cabin was exceptional. Thank you! 💗

5 hours of delay that could've been much shorter if Delta had taken the 1 hour delay they imposed on the flight before boarding to run any of the plane checks required for flight to find the hydraulic issue that required nearly 3 hours to fix. $24 of meal credit buys a sandwich and a soft drink. Poor communication within the terminal about what gate we'd be re-boarding from and when we'd be re-boarding.

Great flight! Only complaint I had was that I didn’t get breakfast that morning because I don’t eat eggs for breakfast.. I ate an energy bar I bought in the airport which I had never done before. Otherwise, another great Delta flight!

Amazing flight! I have never noticed the uniforms of the attendants before in twenty years of flying except today when one female had the most amazing dress on. It was beautifully designed and showed she was in charge. I never dreamed I would google who designed Delta uniforms . The ultimate compliment is when another woman admires your outfit. . I hope your designer puts it on the market

It would be nice if was given wires ear buds. Overall was a good experience was able to sleep on the plane

My flight was 6 pm 6/6. Every hour they delayed it again - air condition issues then no pilot then the crew had worked too many hours and cancelled the flight at 11 pm. Sent customers to NJ a 45 minutes uber ride to a hotel. Had to be back by 5 am for a 7 am flight and again no pilot etc with another three hours of delays.

The entertainment and wifi mostly didn't work on this flight.

Terrible entertainment system - kept freezing and audio kept cutting out. Snacks were mediocre at best for a 5 hour flight.

The check in and bag drop off for Sky Priority members is slow. The Clear security was also slow - a TSA issue.

I am still upset that my bag was lost on a recent trip to Rome ; we were inconvenienced and out €150 Euros ; delta has refused to reimburse us

Flight was late as pilot crew had to land at different airport in their previous flight. Passengers boarded and had to wait for pilots inside plane. Series of incomplete and unnecessary announcements by an annoying voice, rather than complete, informative announcements.

Delay and keep changing gates. I have to run around from B to C then to E.

Boarding was a little difficult. The gate area at O'Hare was very small and crowded due to multiple gates in the area. Could not hear the intercom, so had to rely on signage to see when my group was boarding and the signage was blocked by passengers standing in the gate. Flight was great and we arrived in Montreal on time.

My suitcase was completed destroyed. The top part is broken and unusable now.

When I booked it on Kayak it aaid that I wasn't allowed hamd luggage. I called United Airlines and it took them 6 minutes to figure out if I was allowed free hand luggage. Surely something that simple they should be able to tell me instantly.

I do prefer to fly United and have always had excellent service, except for bad weather. Flights are on time and staff is alway curtious and helpful

We were delayed in Toronto on the tarmac for THREE hours with no clear indication as to why except that it was not a safety hazard. Pilot did apologize more than once but even he was unable to explain why exactly we were delayed. I overheard the stewards saying that the captain was very frustrated with the situation as well because he was not able to explain why except it had something to do with water supply or system on the aircraft and now we needed to wait for an engineer to approve the aircraft for flight. It was very frustrating and distressing as a passenger and we should have been given complimentary meals at the very least.

All male crew was just too woke for me. I felt like a sardine. I will never take a window seat or the rearmost seat again. I booked early and did not pay for seat selection and that was a mistake. The security at IAH was atrocious. I was violated and radiated as I was in a hurry to connect to my other flight. I may have lost items under the seat in front of me that I couldn't see nor bend over to look.

Liked nothing. As per previous segment it was delay delay delay.

In general ok, my only issue is that they had no hot items for purchase. I had very little time in my connection due to baggage/customs/TSA, thag I barely even had a chance for a stop at the washroom and buy water, to make it to my gate when they started boarding. I had nothing to eat because the trip started early, so I was ready to purchase, and they had nothing except for dry items like snacks. I had to purchase a mediocre, overpriced cheese and fruit board, instead of at least a pizza or sliders that I was planning on getting. Other than that, it was fine. But that’s typical Air Canada, to not have enough.

We didn’t make the flight due to Delta’s check in line moving too slow.

The flight was ahead of schedule. A half glass of juice and a cookie is pathetic! No entertainment possibilities. Not even a plug-in for phone or IPad if you wanted to watch a downloaded movie. Back to flying Air Canada!

The flight was ahead of schedule. A half glass of juice and a cookie is pathetic!

The staff were the friendliest I have encountered in years. Absolutely great!

Plane changed to one with no entertainment system or ability to serve hot meals

Flight was delayed 3 times. Then cancelled due to pilot being timed out. They refused hotel vouchers. Gate attendants were very rude and could not help you at all.

Good. Would be better if the carry on baggage was free.

Horrible. I checked out myself that it seems that I can have a free carry-on. But they ask me to pay $75 when we are nearly boarding. It was tricky during check out that make you mistake that you can have a carry-on beside your personal item. Also they ask $75 in the airport instead of $35 during checkout. So the whole process is designed to make you this mistake

Westjet is one of the worst airlines in the world. 100% guaranteed to have flight delays and flight cancellations. Will never book again with Westjet.

Plane should have entertainment, instead of people paying to use wifi

Everything was fine, crew was great. Always appreciate an on-time flight.

All was good with comfort and ease of boarding. There was confusion from what gate to board at. Meant moving a long distance but I allowed plenty of time for this.

Good airport. Good entertainment on the big flight. Did not have a good way to prop up or mount my phone/ipad

Old, noisy plane, bad coffee, delayed. Flight attendant was very nice.

Air Canada at SeaTac was the best. Polite, helpful, all good!

The problem in part was with the airports, not really the fault of Air Canada. Confusing directions regarding the gate, in Seattle the recommended shuttle train entrance was not working. Simular problems in Toronto. Baggage arrived in good time. Marx Bros movie on entertainment from Seattle. I was told I was laughing too loudly, by the flight attendant. No lounge in Seattle. Lounge in Toronto excellent.

No entertainment. Luckily I was the only person in that row. Small seating

Speechless! How professionally running. I am so proud of Air Canada 🍁 👏 ..

Both fights were delayed. Food could be better comparing to other international flights

I found the personal kind and caring. The Problem was not enough people to serve the the customers. The flow was restricted the crowd frustrated by the wait times. Air Canada seems to hire good people but they need backup in order to provide the service we pay for.

Everything you need to know for your flight from Seattle to Halifax

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