Cheap flights from Seattle to Ontario (SEA - ONT) from $40

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight to Ontario departing on 4/9. 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.
SEA — ONT
mar. 5 — mar. 121

The best prices from Seattle/Tacoma Intl to Ontario are usually found in September or October, booked 53 days in advance, depart on a Tuesday or Wednesday and return on a Wednesday

Cheap flight deals from Seattle to Ontario

Discover tips and strategies to find the most affordable flight options for your journey from Seattle (SEA) to Ontario (ONT). Learn about various techniques such as flexible date searches, comparing prices across and setting up price alerts. Use these methods to find the cheapest flights available for your travel needs. Data last updated febrero 29, 2024.

Popular in

November

Cheapest in

September

Round-trip from

$238

One-way from

$79
High demand for flights, 11% potential price rise
Best time to find cheap flights, 22% potential price drop
From Seattle/Tacoma Intl to Ontario
One-way flight from Seattle/Tacoma Intl to Ontario

What is the cheapest day to fly round-trip from Seattle to Ontario?

Flying to your destination on a Saturday can be more expensive, but this shouldn’t discourage you from finding affordable options to get to Ontario. Check prices with Cheapflights to find a great deal for your trip.

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

Users have found that booking a flight from Seattle to Ontario at least 56 days early can save you up to 87% on average compared to booking a flight this week. If booking 56 days before your flight isn’t an option for you, users have found flights from Seattle to Ontario for as little as $279 when booking for a departure date within the next two weeks. You can also check prices now. Some users have found airline tickets as low as $403 for flights departing within the next 3 days.

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

Flights from Seattle to Ontario lean towards being more expensive in December. Prices are generally better when you fly from Seattle to Ontario in September, with the cheapest ticket starting at $69.

When is the cheapest time to fly from Seattle to Ontario (SEA - ONT)?

A simple way to save on the total cost of your ticket is to fly from Seattle to Ontario in the morning. If you’re flexible enough to do this you can expect to save up to 20% on your trip compared to booking a flight at noon.

Cheap Frontier flights from Seattle to Ontario

Explore cheap flight options specifically provided by Frontier for the route between Seattle and Ontario. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 3,314,962 searches. Data last updated febrero 29, 2024.
Take a look at some of the lowest-priced Frontier flights heading from Seattle to Ontario. Deals update often to give you more flight options matching your criteria
lun. 4/155:02 pmSEA - ONT
1 stop13h 24mFrontier
mié. 4/247:41 pmONT - SEA
1 stop20h 50mFrontier
Deal found 2/28$100
mar. 3/510:01 amSEA - ONT
1 stop6h 28mFrontier
mié. 3/68:18 pmONT - SEA
1 stop22h 33mFrontier
Deal found 2/27$103
lun. 4/155:02 pmSEA - ONT
1 stop13h 24mFrontier
vie. 4/1912:59 amONT - SEA
1 stop19h 07mFrontier
Deal found 2/28$107
jue. 4/115:31 pmSEA - ONT
1 stop13h 37mFrontier
mié. 4/1710:49 pmONT - SEA
1 stop17h 42mFrontier
Deal found 2/28$108
sáb. 4/2710:20 amSEA - ONT
1 stop6h 39mFrontier
dom. 4/2812:59 amONT - SEA
1 stop15h 03mFrontier
Deal found 2/28$109
jue. 5/2310:08 pmSEA - ONT
1 stop21h 29mFrontier
mar. 5/289:35 amONT - SEA
Nonstop2h 47mFrontier
Deal found 2/29$110
vie. 5/1710:55 pmSEA - ONT
1 stop10h 11mFrontier
mié. 5/229:50 amONT - SEA
Nonstop2h 47mFrontier
Deal found 2/28$112
sáb. 5/188:58 amSEA - ONT
1 stop7h 00mFrontier
dom. 5/1910:06 amONT - SEA
Nonstop2h 47mFrontier
Deal found 2/28$113
mié. 4/175:58 pmSEA - ONT
1 stop12h 28mFrontier
mar. 4/238:48 pmONT - SEA
1 stop12h 07mFrontier
Deal found 2/28$116
  • One of the most popular airlines traveling from Seattle to Ontario is Frontier. Flights from Frontier traveling this route typically cost $218.83 RT. This price is typically 46% cheaper than other airlines that offer Seattle to Ontario flights. When booking this route, the cheapest RT price found was $84. Seattle/Tacoma Intl Airport is the most common Seattle airport to take off from when flying to Ontario. Ontario Airport is the most popular arrival airport in Ontario. When flying from Seattle to Ontario, Frontier flights are 13% more popular than any other airline flying that same route.

Cheap Alaska Airlines flights from Seattle to Ontario

Explore cheap flight options specifically provided by Alaska Airlines for the route between Seattle and Ontario. Find affordable fares and compare prices with other airlines to secure the best deal for your journey. Over the last 7 days, Cheapflights users made 3,314,962 searches. Data last updated febrero 29, 2024.
Take a gander at the lowest prices we've found on Alaska Airlines flights from Seattle to Ontario. Check back soon if you're not seeing flights that suit your needs.
mar. 4/231:32 pmSEA - ONT
Nonstop2h 33mAlaska Airlines
jue. 5/27:59 pmONT - SEA
Nonstop2h 38mAlaska Airlines
Deal found 2/28$137
mié. 3/276:47 amSEA - ONT
Nonstop2h 38mAlaska Airlines
mié. 4/36:00 amONT - SEA
Nonstop2h 50mAlaska Airlines
Deal found 2/28$147
jue. 4/184:31 pmSEA - ONT
Nonstop2h 33mAlaska Airlines
jue. 4/256:00 amONT - SEA
Nonstop2h 45mAlaska Airlines
Deal found 2/28$172
mar. 4/231:32 pmSEA - ONT
Nonstop2h 33mAlaska Airlines
mar. 4/307:00 amONT - SEA
1 stop4h 41mAlaska Airlines
Deal found 2/28$176
lun. 3/254:31 pmSEA - ONT
Nonstop2h 33mAlaska Airlines
lun. 4/17:59 pmONT - SEA
Nonstop2h 49mAlaska Airlines
Deal found 2/28$182
lun. 5/67:00 amSEA - ONT
Nonstop2h 33mAlaska Airlines
jue. 5/97:59 pmONT - SEA
Nonstop2h 38mAlaska Airlines
Deal found 2/28$187
jue. 3/219:25 pmSEA - ONT
Nonstop2h 34mAlaska Airlines
jue. 3/286:00 amONT - SEA
Nonstop2h 50mAlaska Airlines
Deal found 2/28$192
vie. 5/37:00 amSEA - ONT
Nonstop2h 33mAlaska Airlines
mar. 5/75:00 pmONT - SEA
Nonstop2h 38mAlaska Airlines
Deal found 2/28$202
mar. 4/96:47 amSEA - ONT
Nonstop2h 38mAlaska Airlines
mar. 4/165:00 pmONT - SEA
Nonstop2h 38mAlaska Airlines
Deal found 2/28$207
  • Alaska Airlines is one of the most popular airlines used for those traveling from Seattle to Ontario. Flights on this route from Alaska Airlines typically cost $217.81 RT, a price that is 63% cheaper than the average Seattle to Ontario flight. The cheapest flight found was $84 RT. Seattle/Tacoma Intl Airport is the most common Seattle airport to take off from when flying to Ontario. Ontario Airport is the most popular arrival airport in Ontario. When flying from Seattle to Ontario, Alaska Airlines flights are 11% more popular than any other airline flying that same route.

Cheap Seattle to Ontario flights in February & March 2024

Find cheap flight options from Seattle to Ontario specifically for the months of February and March 2024. Explore affordable fares based on user searches. Over the last 7 days, Cheapflights users made 3,314,962 searches. Prices were last updated on febrero 29, 2024.
These are some of the best deals we've found on flights to Ontario in 2024 at this time. Check back soon for alternative fares.
mar. 3/510:01 amSEA - ONT
1 stop6h 28mFrontier
mié. 3/68:18 pmONT - SEA
1 stop22h 33mFrontier
Deal found 2/27$103
mar. 3/1210:12 pmSEA - ONT
1 stop8h 25mFrontier
mié. 3/207:37 amONT - SEA
1 stop13h 17mFrontier
Deal found 2/28$120
mar. 3/1210:12 pmSEA - ONT
1 stop8h 25mFrontier
lun. 3/1812:59 amONT - SEA
1 stop20h 13mFrontier
Deal found 2/28$123
sáb. 3/2311:18 pmSEA - ONT
1 stop8h 32mFrontier
lun. 3/2512:59 amONT - SEA
1 stop20h 13mFrontier
Deal found 2/29$124
mié. 3/139:54 pmSEA - ONT
1 stop26h 15mFrontier
mar. 3/1912:59 amONT - SEA
1 stop19h 55mFrontier
Deal found 2/28$125
sáb. 3/2311:18 pmSEA - ONT
1 stop8h 32mFrontier
lun. 3/2512:59 amONT - SEA
1 stop20h 13mFrontier
Deal found 2/28$126
mié. 3/139:54 pmSEA - ONT
1 stop8h 43mFrontier
jue. 3/141:22 pmONT - SEA
1 stop5h 25mFrontier
Deal found 2/28$128
jue. 3/79:05 pmSEA - ONT
1 stop9h 32mFrontier
mié. 3/137:37 amONT - SEA
1 stop13h 17mFrontier
Deal found 2/27$129
mar. 3/1210:12 pmSEA - ONT
1 stop8h 25mFrontier
mar. 3/197:27 amONT - SEA
1 stop13h 45mFrontier
Deal found 2/28$130

Seattle to Ontario 2024 flight deals

Discover exclusive flight deals for travel between Seattle and Ontario in 2024. Find excellent offers based on user searches. Over the last 7 days, Cheapflights users made 3,314,962 searches. Data last updated febrero 29, 2024.
These are some of the best deals we've found on flights to Ontario in 2024 at this time. Check back soon for alternative fares.
lun. 4/155:02 pmSEA - ONT
1 stop13h 24mFrontier
mié. 4/247:41 pmONT - SEA
1 stop20h 50mFrontier
Deal found 2/28$100
mar. 3/510:01 amSEA - ONT
1 stop6h 28mFrontier
mié. 3/68:18 pmONT - SEA
1 stop22h 33mFrontier
Deal found 2/27$103
mar. 4/169:35 pmSEA - ONT
1 stop8h 51mFrontier
mar. 4/2312:59 amONT - SEA
1 stop15h 59mFrontier
Deal found 2/29$107
lun. 4/225:02 pmSEA - ONT
1 stop6h 57mFrontier
vie. 4/2612:55 amONT - SEA
1 stop19h 37mFrontier
Deal found 2/29$108
sáb. 4/2710:20 amSEA - ONT
1 stop6h 39mFrontier
dom. 4/2812:59 amONT - SEA
1 stop15h 03mFrontier
Deal found 2/28$109
sáb. 4/203:02 pmSEA - ONT
1 stop8h 57mFrontier
mar. 4/238:48 pmONT - SEA
1 stop12h 07mFrontier
Deal found 2/29$110
vie. 5/1710:55 pmSEA - ONT
1 stop10h 11mFrontier
mié. 5/229:50 amONT - SEA
Nonstop2h 47mFrontier
Deal found 2/28$112
mar. 5/281:22 pmSEA - ONT
Nonstop2h 37mFrontier
vie. 6/710:06 amONT - SEA
Nonstop2h 47mFrontier
Deal found 2/29$113
sáb. 4/139:32 pmSEA - ONT
1 stop8h 59mMultiple Airlines
sáb. 4/206:00 amONT - SEA
Nonstop2h 45mMultiple Airlines
Deal found 2/28$114

Non-stop flights to Ontario from Seattle

Discover non-stop flight options from Seattle to Ontario. Find direct flights with no layovers, providing a convenient travel experience. Explore non-stop flight options based on user searches, and compare prices and availability for your desired travel dates. Over the last 7 days, Cheapflights users made 3,314,962 searches. Data last updated febrero 29, 2024.
For a quicker trip, book one of these direct flights from Seattle to Ontario. Select from other flights from Seattle to Ontario by using the search form above.
jue. 5/301:53 pmSEA - ONT
Nonstop2h 37mFrontier
mié. 6/59:50 amONT - SEA
Nonstop2h 47mFrontier
Deal found 2/29$118
mar. 4/231:32 pmSEA - ONT
Nonstop2h 33mAlaska Airlines
sáb. 4/275:00 pmONT - SEA
Nonstop2h 38mAlaska Airlines
Deal found 2/28$137
vie. 5/171:53 pmSEA - ONT
Nonstop2h 37mFrontier
mié. 5/229:50 amONT - SEA
Nonstop2h 47mFrontier
Deal found 2/28$138
mié. 3/271:59 pmSEA - ONT
Nonstop2h 38mAlaska Airlines
mié. 4/35:32 pmONT - SEA
Nonstop2h 49mAlaska Airlines
Deal found 2/28$147
sáb. 5/251:53 pmSEA - ONT
Nonstop2h 37mFrontier
mié. 5/299:50 amONT - SEA
Nonstop2h 47mFrontier
Deal found 2/28$148
mié. 3/201:59 pmSEA - ONT
Nonstop2h 38mAlaska Airlines
mié. 3/276:00 amONT - SEA
Nonstop2h 50mAlaska Airlines
Deal found 2/28$157
vie. 5/241:53 pmSEA - ONT
Nonstop2h 37mFrontier
mar. 5/289:35 amONT - SEA
Nonstop2h 47mFrontier
Deal found 2/28$158
mar. 4/302:20 pmSEA - ONT
Nonstop2h 40mDelta
mar. 5/711:32 amONT - SEA
Nonstop2h 47mDelta
Deal found 2/29$167
mié. 4/104:31 pmSEA - ONT
Nonstop2h 33mAlaska Airlines
mar. 4/165:00 pmONT - SEA
Nonstop2h 38mAlaska Airlines
Deal found 2/28$172

Seattle to Ontario flights leaving soon

Find last-minute flight options from Seattle to Ontario for spontaneous travel. Discover available flights and compare prices based on user searches. Secure great deals and offers for spontaneous trips with quick booking options. Over the last 7 days, Cheapflights users made 3,314,962 searches. Data last updated febrero 29, 2024.
Have a look at some of the last-minute flights available departing from Seattle to Ontario. Users should be sure to double check the price, date, and time of their last-minute flight.
mar. 3/510:01 amSEA - ONT
1 stop6h 28mFrontier
mié. 3/68:18 pmONT - SEA
1 stop22h 33mFrontier
Deal found 2/27$103
jue. 3/79:05 pmSEA - ONT
1 stop9h 32mFrontier
mié. 3/209:00 amONT - SEA
1 stop9h 10mFrontier
Deal found 2/28$120
jue. 3/79:05 pmSEA - ONT
1 stop9h 32mFrontier
jue. 3/211:20 pmONT - SEA
1 stop5h 27mFrontier
Deal found 2/28$128
jue. 3/79:05 pmSEA - ONT
1 stop9h 32mFrontier
mié. 3/137:37 amONT - SEA
1 stop13h 17mFrontier
Deal found 2/27$129
jue. 3/79:05 pmSEA - ONT
1 stop9h 32mFrontier
mar. 3/1212:59 amONT - SEA
1 stop19h 55mFrontier
Deal found 2/27$132
jue. 3/79:05 pmSEA - ONT
1 stop9h 32mFrontier
mar. 3/1212:59 amONT - SEA
1 stop19h 55mFrontier
Deal found 2/27$133
jue. 3/79:05 pmSEA - ONT
1 stop9h 32mFrontier
lun. 3/1812:59 amONT - SEA
1 stop20h 13mFrontier
Deal found 2/28$135
sáb. 3/911:14 pmSEA - ONT
1 stop7h 36mFrontier
dom. 3/1012:59 amONT - SEA
1 stop23h 00mFrontier
Deal found 2/27$146
jue. 3/79:05 pmSEA - ONT
1 stop9h 32mFrontier
jue. 3/141:22 pmONT - SEA
1 stop5h 25mFrontier
Deal found 2/27$149

One-way flights to Ontario from Seattle

Search for one-way flight options from Seattle to Ontario. Find affordable one-way fares based on user searches. Compare prices and availability to plan your one-way journey according to your preferred dates and budget. Over the last 7 days, Cheapflights users made 3,314,962 searches. Data last updated febrero 29, 2024.
Take a look at some of the one-way flights we've detected from Seattle to Ontario. Those needing a return flight from Seattle to Ontario can use the search form above.
mar. 4/910:12 pmSEA - ONT
1 stop8h 14mFrontier
Deal found 2/28$40
sáb. 4/2710:20 amSEA - ONT
1 stop6h 39mFrontier
Deal found 2/28$45
mié. 4/106:33 pmSEA - ONT
1 stop11h 53mFrontier
Deal found 2/27$46
mié. 5/156:33 pmSEA - ONT
1 stop17h 47mFrontier
Deal found 2/28$50
sáb. 4/2710:20 amSEA - ONT
1 stop6h 39mFrontier
Deal found 2/29$58
sáb. 3/911:14 pmSEA - ONT
1 stop7h 36mFrontier
Deal found 2/28$59
mar. 3/1210:12 pmSEA - ONT
1 stop8h 25mFrontier
Deal found 2/27$60
mar. 3/2610:12 pmSEA - ONT
1 stop8h 25mFrontier
Deal found 2/28$61
mié. 3/69:17 pmSEA - ONT
1 stop19h 10mMultiple Airlines
Deal found 2/28$62

Find flights from Seattle to Ontario within your budget

Customize your flight search to find flights from Seattle to Ontario that fit within your specific budget. Explore options based on user searches and filter the results based on your desired price range. Find flights that match your budget for a cost-effective journey. Over the last 7 days, Cheapflights users made 3,314,962 searches. Data last updated febrero 29, 2024.

Fly from

Any airport

Fly to

Any airport

Budget

$100 - $157

Route

Depart

Return

Price

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

lun. 4/15

1 stop13h 24m

Ontario

mié. 4/24

1 stop20h 50m

$100

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

mar. 3/5

1 stop6h 28m

Ontario

mié. 3/6

1 stop22h 33m

$103

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

lun. 4/15

1 stop13h 24m

Ontario

vie. 4/19

1 stop19h 07m

$107

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

jue. 4/11

1 stop13h 37m

Ontario

mié. 4/17

1 stop17h 42m

$108

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

sáb. 4/27

1 stop6h 39m

Ontario

dom. 4/28

1 stop15h 03m

$109

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

sáb. 4/13

1 stop8h 59m

Ontario

sáb. 4/20

Nonstop2h 45m

$114

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

lun. 4/15

Nonstop2h 34m

Ontario

sáb. 4/20

1 stop6h 36m

$132

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

mar. 4/23

Nonstop2h 33m

Ontario

jue. 5/2

Nonstop2h 38m

$137

Seattle/Tacoma IntlOntario

SEA - ONT

SEAONT

Seattle/Tacoma Intl

mié. 3/20

Nonstop2h 27m

Ontario

mar. 3/26

Nonstop2h 47m

$157

Flights are sorted by cheapest first

Deals found on 2/28

When is the best time to book a flight from Seattle to Ontario?

Use this chart to determine the optimal time to book a round-trip flight from Seattle to Ontario. Price data was last updated on January 28, 2024.
The best time to book flights from Seattle to Ontario is 53 days before your desired departure date. The cost of your flight will likely increase significantly if you book two weeks in advance of your flight.
Search Deals

When is the cheapest time to fly from Seattle to Ontario?

Use this chart to determine the cheapest time to fly round-trip from Seattle to Ontario. Price data was last updated on February 25, 2024.
Morning
Noon
Afternoon
Evening
All times are departure.
Travelers seeking maximum savings on their Seattle to Ontario flight should consider departing on Wednesday evenings when fares are most often at their lowest. Sunday at noon flights should be avoided if possible as fares are typically the most expensive at this time.
Search Deals

Average price of flights to Ontario by month

Plan your trip from Seattle to Ontario by taking into account the cheapest months to travel. The average price of a one-way flight from Seattle to Ontario is currently $53 while a round-trip flight costs $119. Price data was last updated on February 25, 2024.

Currently, October is the cheapest month in which you can book a flight from Seattle to Ontario (average of $237). Flying from Seattle to Ontario in June is currently the most expensive (average of $357). There are several factors that can impact the price of a flight, so comparing airlines, departure airports and flight times can provide users with more options.

January

$271

February

$282

March

$289

April

$308

May

$289

June

$357

July

$332

August

$288

September

$258

October

$237

November

$268

December

$271

Temperature and rainfall in Ontario by month

Plan your trip to Ontario by taking into account the average temperature and rainfall totals by month.

LAX

Temperature

57.2 - 73.4 °F

Reviews of airlines servicing Ontario

Get insights into the airlines that provide service to Ontario. Read reviews, discover amenities, and learn about the overall travel experience offered by airlines. Use this information to make informed decisions when choosing an airline for your flight to Ontario. Reviews last updated febrero 29, 2024.
Read through reviews of airlines operating flights from Seattle to Ontario, such as Frontier, Alaska Airlines and Delta. You can also see how each airline compares in terms of entertainment options, comfort, food, crew/service, and boarding process.
8.1
Very good
9,264 reviews

Entertainment

7.4

Overall

8.1

Crew

8.6

Boarding

8.2

Comfort

7.9

Food

7.4

Reviews

1 / 10

I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.

8.1
Very good
9,264 reviews
8.1
Very good
9,264 reviews

Entertainment

7.4

Overall

8.1

Crew

8.6

Boarding

8.2

Comfort

7.9

Food

7.4

Reviews

1 / 10

I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.

8.1
Very good
11,818 reviews
8.1
Very good
9,264 reviews

Entertainment

7.4

Overall

8.1

Crew

8.6

Boarding

8.2

Comfort

7.9

Food

7.4

Reviews

1 / 10

I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.

7.4
Good
11,794 reviews
8.1
Very good
9,264 reviews

Entertainment

7.4

Overall

8.1

Crew

8.6

Boarding

8.2

Comfort

7.9

Food

7.4

Reviews

1 / 10

I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.

7.3
Good
15,571 reviews
8.1
Very good
9,264 reviews

Entertainment

7.4

Overall

8.1

Crew

8.6

Boarding

8.2

Comfort

7.9

Food

7.4

Reviews

1 / 10

I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.

6.4
Okay
4,459 reviews
8.1
Very good
9,264 reviews

Entertainment

7.4

Overall

8.1

Crew

8.6

Boarding

8.2

Comfort

7.9

Food

7.4

Reviews

1 / 10

I paid for an aisle seat and found I was bumped to the middle seat. No entertainment at all, bathroom was so tiny, a woman had a hard time in there. Seems it was considered for men only. This was my first time on Alaska airlines. I don’t think I want to fly on Alaska Airlines again.

Related info for your journey

Find useful and relevant information for your journey from Seattle to Ontario. Access travel guides, tips, and recommendations to enhance your travel experience. Get information about local attractions, weather, transportation options, and more.

What airports do I use to fly from Seattle to Ontario?

Booking a flight from Seattle/Tacoma Intl (SEA) to Ontario (ONT) is your only option if you wish to fly from Seattle to Ontario. On a typical day, there are 13 flights from Seattle/Tacoma Intl to Ontario, all of which are around 2h 27m for a nonstop flight. You can also purchase a plane ticket from 7 airlines when you book a flight from Seattle/Tacoma Intl to Ontario.

Can I find flights from Seattle to Ontario for under $100 on Cheapflights?

Yes, there are multiple flights from Seattle to Ontario for under $100. The cheapest flight booked recently is on Frontier for just $100, but on average you can expect to pay $116.

Are there nonstop flights from Seattle to Ontario for under $200 on Cheapflights?

Cheapflights has at least 20 direct flights from Seattle to Ontario under $200. A good price for a nonstop flight from Seattle to Ontario is less than $178.

Are there last-minute flights available from Seattle to Ontario for under $200?

There are currently 20+ open flights from Seattle to Ontario within the next 7 days for less than $200.

What days are nonstop flights available from Seattle to Ontario?

You can find nonstop flights on the following days: Friday, Saturday.

How popular is this Seattle to Ontario flight route?

How many flights depart from Seattle to Ontario on average per day?

Travelers can expect 9 flights from Seattle to Ontario on average per day.
Morning (6am - Noon) - 22% of flight departures
Afternoon (Noon - 6pm) - 56% of flight departures
Evening (6pm - Midnight) - 22% of flight departures

How long is the flight from Seattle to Ontario?

A quick flight from Seattle to Ontario can take about 2h 33m. Frontier provides one of the quickest options available for as low as $100. The distance from Seattle to Ontario is about 962 mi. Both multi-stop and nonstop flights can be found to your destination and back.

What are the cheapest airlines flying from Seattle to Ontario round-trip?

Our cheapest airline available from Seattle to Ontario is Frontier. Our recent data shows that you can find tickets from as low as $100 on this airline. An additional option worth looking into is Alaska Airlines, starting at $137. Frontier is priced at 52% lower than the current average price of a flight leaving 3 months from now.

What are the most popular airlines that fly from Seattle to Ontario?

What are the most reliable airlines from Seattle to Ontario?

Before booking your flight to Ontario from Seattle, check out the most reliable airlines to get you to your destination on time: Korean Air (98%), WestJet (93%), Delta( 88%).

What are the cheapest flights from Seattle to Ontario?

Looking at all options, your cheapest flight can be booked for $98. While the most popular route (Seattle/Tacoma Intl - Ontario) can be booked for $98 on average our data indicates $309 when flying from Seattle to Ontario.

What does SEA to ONT mean?

SEA stands for Seattle/Tacoma Intl Airport, while ONT stands for Ontario Airport. These codes are often called IATA codes, a set of identifiers established by IATA (International Air Transport Association) that is widely used by airlines and the aviation industry.

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