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$98+ Cheap flights from Irvine, CA to Niagara Falls, ON, Canada

This is the cheapest one-way flight price found by a Cheapflights user in the last 72 hours by searching for a flight departing on 12/12. Fares are subject to change and may not be available on all flights or dates of travel.
LAX — YYZ
Dec 13 — Dec 201
Sat 12/13
Sat 12/20
1 adult, Economy
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Cheapflights Tip: The best prices from Irvine to Niagara Falls are usually found in June or May, booked 75 days in advance, depart on a Thursday or Tuesday and return on a Friday

Find flight deals from Irvine to Niagara Falls

Cheapest flights from Irvine to Niagara Falls
Explore the most affordable flight options available from Irvine to Niagara Falls. Find the lowest fares from popular airlines and budget airlines, with prices last updated on November 13, 2025.

This Kiwi.com deal was found by Cheapflights users on 11/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Wed 12/31:57 pmLAX - YYZ
1 stop26h 43mMultiple Airlines
Mon 12/87:55 pmYYZ - LAX
1 stop27h 10mMultiple Airlines
Deal found 11/13$235
This Vliegwinkel deal was found by Cheapflights users on 11/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Vliegwinkel is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/46:10 pmLAX - YYZ
1 stop9h 37mMultiple Airlines
Sat 12/1310:00 amYYZ - LAX
Nonstop5h 36mMultiple Airlines
Deal found 11/13$246
This Kiwi.com deal was found by Cheapflights users on 11/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Mon 12/153:30 pmLAX - YYZ
1 stop12h 17mMultiple Airlines
Wed 12/179:35 amYYZ - LAX
1 stop13h 30mMultiple Airlines
Deal found 11/13$251
This Booking.com deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Booking.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/47:45 amLAX - YYZ
Nonstop4h 45mAir Canada
Sat 12/136:55 pmYYZ - LAX
Nonstop5h 33mAir Canada
Deal found 11/12$252
This Kiwi.com deal was found by Cheapflights users on 11/13. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/113:30 pmLAX - YYZ
1 stop11h 50mMultiple Airlines
Thu 12/187:55 pmYYZ - LAX
1 stop14h 23mMultiple Airlines
Deal found 11/13$255
This Kiwi.com deal was found by Cheapflights users on 11/12. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Tue 12/21:40 pmLAX - YYZ
Nonstop4h 43mPorter Airlines
Mon 12/810:00 amYYZ - LAX
Nonstop5h 36mPorter Airlines
Deal found 11/12$256
This Kiwi.com deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Fri 12/121:40 pmLAX - YYZ
Nonstop4h 43mPorter Airlines
Sat 2/710:00 amYYZ - LAX
Nonstop5h 39mPorter Airlines
Deal found 11/11$257
This Kiwi.com deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/1112:15 pmLAX - YYZ
1 stop9h 11mWestJet
Mon 12/1510:00 amYYZ - LAX
1 stop9h 58mWestJet
Deal found 11/11$258
This Kiwi.com deal was found by Cheapflights users on 11/11. Clicking the “Pick Dates” button in this card will allow you to select your dates and further customize your flight criteria. From there, click “Find deals”, make sure Kiwi.com is selected, and click “Compare selected” under the list of providers to see comparable flight deals.
Thu 12/43:30 pmLAX - YYZ
1 stop11h 50mMultiple Airlines
Thu 12/119:45 amYYZ - LAX
1 stop13h 20mMultiple Airlines
Deal found 11/11$259

Cheap flight deals from Irvine to Niagara Falls

Keep the following information in mind while searching for Irvine to Niagara Falls flight deals. Data was last updated November 13, 2025.

Most accurate provider

Justfly.com
3 stars

Most trusted provider

Justfly.com
3 stars

Round-trip from

$235
(Kiwi.com)

One-way from

$98
(SmartFares)

Popular in

December

Cheapest in

June

Average price

$398
Provider with most accurate pricing for Los Angeles-Toronto (YTO) flight deals.
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Provider most trusted by Cheapflights users for Los Angeles-Toronto (YTO) flights.
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From Irvine to Niagara Falls
Search Deals
One-way flight from Irvine to Niagara Falls
Search Deals
Highest demand for flights based on searches. 20% potential increase in price ($84 potential increase over avg. RT price).
Search Deals
Cheapest flight prices on average. 4% potential price decrease ($14 potential savings vs. average RT price).
Search Deals
Average for round-trip flights in November 2025
Search Deals

Cheapflights Fare Finder

 
Customize your flight search to find flights from Irvine to Niagara Falls 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 2,558,603 searches. Data last updated November 13, 2025.
Use the filters below to find and compare flights from Irvine to Niagara Falls that are best for you.

Fly from

Irvine

Fly to

Niagara Falls

Route

Depart

Return

Price

Los AngelesToronto

LAX - YYZ

LAXYYZ

Los Angeles

Thu 12/4

6:00 am-4:02 pm

1 stop7h 02m

Toronto Pearson Intl

Thu 12/4

6:55 pm-9:28 pm

Nonstop5h 33m

$307

Los AngelesToronto

LAX - YYZ

LAXYYZ

Los Angeles

Fri 12/5

12:25 am-9:58 am

1 stop6h 33m

Toronto Pearson Intl

Sat 12/13

4:10 pm-9:01 pm

1 stop7h 51m

$318

Los AngelesToronto

LAX - YYZ

LAXYYZ

Los Angeles

Wed 1/14

12:30 am-9:58 am

1 stop6h 28m

Toronto Pearson Intl

Sun 1/18

6:55 pm-9:28 pm

Nonstop5h 33m

$321

Los AngelesToronto

LAX - YYZ

LAXYYZ

Los Angeles

Tue 11/25

12:25 am-9:58 am

1 stop6h 33m

Toronto Pearson Intl

Tue 12/2

3:30 pm-8:40 pm

1 stop8h 10m

$336

Los AngelesToronto

LAX - YYZ

LAXYYZ

Los Angeles

Wed 12/3

12:25 am-9:58 am

1 stop6h 33m

Toronto Pearson Intl

Mon 12/8

9:00 am-5:14 pm

1 stop11h 14m

$336

Los AngelesToronto

LAX - YYZ

LAXYYZ

Los Angeles

Sun 11/30

12:55 am-2:20 pm

1 stop10h 25m

Toronto Pearson Intl

Mon 12/8

4:55 pm-7:27 pm

Nonstop5h 32m

$352

Los AngelesToronto

LAX - YYZ

LAXYYZ

Los Angeles

Sat 12/6

5:26 pm-3:35 pm

2 stops19h 09m

Toronto Pearson Intl

Sat 12/13

4:45 pm-11:59 pm

1 stop10h 14m

$365

Los AngelesToronto

LAX - YYZ

LAXYYZ

Los Angeles

Sun 11/30

12:55 am-2:20 pm

1 stop10h 25m

Toronto Pearson Intl

Mon 12/8

9:00 am-3:30 pm

1 stop9h 30m

$367

Los AngelesToronto

LAX - YYZ

LAXYYZ

Los Angeles

Wed 11/26

5:00 am-3:02 pm

1 stop7h 02m

Toronto Pearson Intl

Wed 11/26

6:55 pm-9:28 pm

Nonstop5h 33m

$374

Los AngelesToronto

LAX - YYZ

LAXYYZ

Los Angeles

Wed 11/26

2:22 pm-11:59 pm

1 stop6h 37m

Toronto Pearson Intl

Wed 12/3

12:30 am-11:44 am

1 stop14h 14m

$376

Flights are sorted by cheapest round-trip flights first.

Deals found on 11/12

Showing 1-10 of 20 results
1
2

Best time to book a flight from Irvine to Niagara Falls

Have a flexible travel schedule? Discover the best time to fly to Niagara Falls from Irvine with our price prediction graph.
Estimated round-trip price
Rates are based on past data. Find the cheapest month and day to book your flight based on your travel requirements, then search for cheap deals.

Cheapflights Insights

Everything you need to know about your flight from Irvine to Niagara Falls

How far ahead should I book a flight from Irvine to Niagara Falls?

Use this chart to determine the optimal time to book a round-trip flight from Irvine to Niagara Falls. Price data was last updated on November 7, 2025.

Booking 75 days in advance of your planned departure date is, on average, the best time to get cheap flights from Irvine to Niagara Falls. The general trend is that the closer you book to the departure date, the more expensive your flight will be.

What is the cheapest month to book a flight from Irvine to Niagara Falls?

Currently, June is the cheapest month in which you can book a flight from Irvine to Niagara Falls (average of $74). Flying from Irvine to Niagara Falls in November is currently the most expensive (average of $145). 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.

What is the cheapest time of day to fly from IR9 to NI4?

Find hourly flight availability from Irvine to Niagara Falls. Discover flight options and departure times throughout the day, allowing you to choose a departure time that suits your schedule. Data last updated November 13, 2025.

It’s typically best to fly out from Irvine to Niagara Falls at noon. Doing so could potentially save you 48% on the flight price compared to flying in the morning, which is usually more expensive.

What is the cheapest day to fly from Irvine to Niagara Falls?

Use this chart to determine the cheapest time to fly round-trip from Irvine to Niagara Falls. Price data was last updated on December 16, 2024.

Travelers seeking maximum savings on their Irvine to Niagara Falls flight should consider departing on Wednesday mornings when fares are most often at their lowest. Sunday mornings flights should be avoided if possible as fares are typically the most expensive at this time.

Weekly flight availability from Irvine to Niagara Falls

Explore weekly flight availability from Irvine to Niagara Falls. Discover flights operating on different days of the week, giving you the flexibility to choose a travel day that best fits your plans. Compare info to find the most convenient option for your journey. Data last updated November 13, 2025.

The most flights from IR9 to NI4 are scheduled on a Monday (19 on average). You will have fewer flight options on Tuesday, which is when the least amount of flights are scheduled (17 on average).

Reviews of airlines servicing Niagara Falls

Get insights into the airlines that provide service to Niagara Falls. 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 Niagara Falls. Reviews last updated November 13, 2025.
Get a feel of what it's like to fly with Porter Airlines, Delta, and United Airlines from Irvine to Niagara Falls by reading reviews from past customers. Users have also rated airlines in terms of entertainment options, comfort, food, crew/service, and boarding process.
Porter Airlines
8.0
Very good
389 reviews

Crew

8.6

Entertainment

7.0

Boarding

8.2

Comfort

8.0

Overall

8.0

Food

7.6

Reviews

1 / 20
2.0
Mediocre

Kelly,Nov 2025

YVR - YUL

I recently flew with Porter Airlines on Flight PD372 on October 30th, and unfortunately, had a very disappointing experience. At the gate, one of their attendants gave me two boarding passes. I assumed these were for my itinerary from Vancouver to Montreal and back, but one of the boarding passes unexpectedly included a connecting flight to Toronto, which was never part of my booking or invoice. As a result of this error, my checked baggage was mistakenly routed to Toronto. When I contacted Porter’s customer service, I spoke to an agent who apologized on behalf of the attendant (employee number 13209961) and promised to have my luggage flown back to Montreal. However, shortly after, I was told there was nothing they could do except for me to travel to Toronto myself to pick up my bag. This is highly unreasonable and unfair, considering the issue was caused by their staff printing the wrong boarding pass. This entire situation caused me significant inconvenience and stress. I expected Porter to correct the mistake and deliver my luggage as originally planned, but instead, I was left with the burden of fixing an error that was not mine. I even have a photo of the staff badge of the employee who made the promise, yet the company still failed to honor it. I hope Porter Airlines reviews their internal communication and baggage handling procedures to prevent this from happening to other passengers. Customer care and responsibility fell short in this experience, and I am still waiting for a satisfactory resolution.
Porter Airlines
8.0
Very good
389 reviews
Porter Airlines
8.0
Very good
389 reviews

Crew

8.6

Entertainment

7.0

Boarding

8.2

Comfort

8.0

Overall

8.0

Food

7.6

Reviews

1 / 20
2.0
Mediocre

Kelly,Nov 2025

YVR - YUL

I recently flew with Porter Airlines on Flight PD372 on October 30th, and unfortunately, had a very disappointing experience. At the gate, one of their attendants gave me two boarding passes. I assumed these were for my itinerary from Vancouver to Montreal and back, but one of the boarding passes unexpectedly included a connecting flight to Toronto, which was never part of my booking or invoice. As a result of this error, my checked baggage was mistakenly routed to Toronto. When I contacted Porter’s customer service, I spoke to an agent who apologized on behalf of the attendant (employee number 13209961) and promised to have my luggage flown back to Montreal. However, shortly after, I was told there was nothing they could do except for me to travel to Toronto myself to pick up my bag. This is highly unreasonable and unfair, considering the issue was caused by their staff printing the wrong boarding pass. This entire situation caused me significant inconvenience and stress. I expected Porter to correct the mistake and deliver my luggage as originally planned, but instead, I was left with the burden of fixing an error that was not mine. I even have a photo of the staff badge of the employee who made the promise, yet the company still failed to honor it. I hope Porter Airlines reviews their internal communication and baggage handling procedures to prevent this from happening to other passengers. Customer care and responsibility fell short in this experience, and I am still waiting for a satisfactory resolution.
Delta
7.9
Good
8,007 reviews
Porter Airlines
8.0
Very good
389 reviews

Crew

8.6

Entertainment

7.0

Boarding

8.2

Comfort

8.0

Overall

8.0

Food

7.6

Reviews

1 / 20
2.0
Mediocre

Kelly,Nov 2025

YVR - YUL

I recently flew with Porter Airlines on Flight PD372 on October 30th, and unfortunately, had a very disappointing experience. At the gate, one of their attendants gave me two boarding passes. I assumed these were for my itinerary from Vancouver to Montreal and back, but one of the boarding passes unexpectedly included a connecting flight to Toronto, which was never part of my booking or invoice. As a result of this error, my checked baggage was mistakenly routed to Toronto. When I contacted Porter’s customer service, I spoke to an agent who apologized on behalf of the attendant (employee number 13209961) and promised to have my luggage flown back to Montreal. However, shortly after, I was told there was nothing they could do except for me to travel to Toronto myself to pick up my bag. This is highly unreasonable and unfair, considering the issue was caused by their staff printing the wrong boarding pass. This entire situation caused me significant inconvenience and stress. I expected Porter to correct the mistake and deliver my luggage as originally planned, but instead, I was left with the burden of fixing an error that was not mine. I even have a photo of the staff badge of the employee who made the promise, yet the company still failed to honor it. I hope Porter Airlines reviews their internal communication and baggage handling procedures to prevent this from happening to other passengers. Customer care and responsibility fell short in this experience, and I am still waiting for a satisfactory resolution.
United Airlines
7.4
Good
9,015 reviews
Porter Airlines
8.0
Very good
389 reviews

Crew

8.6

Entertainment

7.0

Boarding

8.2

Comfort

8.0

Overall

8.0

Food

7.6

Reviews

1 / 20
2.0
Mediocre

Kelly,Nov 2025

YVR - YUL

I recently flew with Porter Airlines on Flight PD372 on October 30th, and unfortunately, had a very disappointing experience. At the gate, one of their attendants gave me two boarding passes. I assumed these were for my itinerary from Vancouver to Montreal and back, but one of the boarding passes unexpectedly included a connecting flight to Toronto, which was never part of my booking or invoice. As a result of this error, my checked baggage was mistakenly routed to Toronto. When I contacted Porter’s customer service, I spoke to an agent who apologized on behalf of the attendant (employee number 13209961) and promised to have my luggage flown back to Montreal. However, shortly after, I was told there was nothing they could do except for me to travel to Toronto myself to pick up my bag. This is highly unreasonable and unfair, considering the issue was caused by their staff printing the wrong boarding pass. This entire situation caused me significant inconvenience and stress. I expected Porter to correct the mistake and deliver my luggage as originally planned, but instead, I was left with the burden of fixing an error that was not mine. I even have a photo of the staff badge of the employee who made the promise, yet the company still failed to honor it. I hope Porter Airlines reviews their internal communication and baggage handling procedures to prevent this from happening to other passengers. Customer care and responsibility fell short in this experience, and I am still waiting for a satisfactory resolution.
WestJet
7.2
Good
3,159 reviews
Porter Airlines
8.0
Very good
389 reviews

Crew

8.6

Entertainment

7.0

Boarding

8.2

Comfort

8.0

Overall

8.0

Food

7.6

Reviews

1 / 20
2.0
Mediocre

Kelly,Nov 2025

YVR - YUL

I recently flew with Porter Airlines on Flight PD372 on October 30th, and unfortunately, had a very disappointing experience. At the gate, one of their attendants gave me two boarding passes. I assumed these were for my itinerary from Vancouver to Montreal and back, but one of the boarding passes unexpectedly included a connecting flight to Toronto, which was never part of my booking or invoice. As a result of this error, my checked baggage was mistakenly routed to Toronto. When I contacted Porter’s customer service, I spoke to an agent who apologized on behalf of the attendant (employee number 13209961) and promised to have my luggage flown back to Montreal. However, shortly after, I was told there was nothing they could do except for me to travel to Toronto myself to pick up my bag. This is highly unreasonable and unfair, considering the issue was caused by their staff printing the wrong boarding pass. This entire situation caused me significant inconvenience and stress. I expected Porter to correct the mistake and deliver my luggage as originally planned, but instead, I was left with the burden of fixing an error that was not mine. I even have a photo of the staff badge of the employee who made the promise, yet the company still failed to honor it. I hope Porter Airlines reviews their internal communication and baggage handling procedures to prevent this from happening to other passengers. Customer care and responsibility fell short in this experience, and I am still waiting for a satisfactory resolution.
Air Canada
7.1
Good
10,444 reviews
Porter Airlines
8.0
Very good
389 reviews

Crew

8.6

Entertainment

7.0

Boarding

8.2

Comfort

8.0

Overall

8.0

Food

7.6

Reviews

1 / 20
2.0
Mediocre

Kelly,Nov 2025

YVR - YUL

I recently flew with Porter Airlines on Flight PD372 on October 30th, and unfortunately, had a very disappointing experience. At the gate, one of their attendants gave me two boarding passes. I assumed these were for my itinerary from Vancouver to Montreal and back, but one of the boarding passes unexpectedly included a connecting flight to Toronto, which was never part of my booking or invoice. As a result of this error, my checked baggage was mistakenly routed to Toronto. When I contacted Porter’s customer service, I spoke to an agent who apologized on behalf of the attendant (employee number 13209961) and promised to have my luggage flown back to Montreal. However, shortly after, I was told there was nothing they could do except for me to travel to Toronto myself to pick up my bag. This is highly unreasonable and unfair, considering the issue was caused by their staff printing the wrong boarding pass. This entire situation caused me significant inconvenience and stress. I expected Porter to correct the mistake and deliver my luggage as originally planned, but instead, I was left with the burden of fixing an error that was not mine. I even have a photo of the staff badge of the employee who made the promise, yet the company still failed to honor it. I hope Porter Airlines reviews their internal communication and baggage handling procedures to prevent this from happening to other passengers. Customer care and responsibility fell short in this experience, and I am still waiting for a satisfactory resolution.

Related info for your journey

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

  • How long is the flight from Irvine to Niagara Falls?

    United Airlines can get you from Irvine to Niagara Falls in just under 6h 33m. Your travel time can differ by up to . The distance between Irvine and Niagara Falls is about 2170 mi.

  • What are the cheapest airlines to fly from Irvine to Niagara Falls one-way?

    One-way options have recently been found by users for as low as $98 on Porter Airlines. Other airlines that offer cheap prices include United Airlines from $122 and Air Canada from $122 one-way.

  • What are the most reliable airlines from Irvine to Niagara Falls?

    The top 3 most reliable airlines when flying from Irvine to Niagara Falls are Sun Country Air (100%), Brussels Airlines (100%) and Austrian Airlines (98%).

  • What are the cheapest flights from Irvine to Niagara Falls?

    On average you can expect to pay $1,409 for a flight from Irvine to Niagara Falls. The cheapest flight overall is $85 while the most popular route, (Los Angeles - Toronto Pearson Intl) is currently priced at $237.

  • Can I find deals for flights from Irvine to Niagara Falls that include hotel bookings?

    Yes. In addition to deals on Irvine to Niagara Falls flights, Cheapflights offers vacation packages that include both flights and hotel.

  • How can I find direct flights from Irvine to Niagara Falls?

    After entering your origin and destination, apply the non-stop filter on the search result page to find direct flights from Irvine to Niagara Falls.

  • Can I find deals for business class flights from Irvine to Niagara Falls?

    Yes. Cheapflights offers flight deals from Irvine to Niagara Falls by cabin class. In addition to browsing deals, you can also filter by cabin class on the search results page after making a search.

  • What is the cheapest month to book a flight from Irvine to Niagara Falls?

    Currently, June is the cheapest month in which you can book a flight from Irvine to Niagara Falls (average of $74). Flying from Irvine to Niagara Falls in November is currently the most expensive (average of $145). 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.

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Top 7 airlines flying from Irvine to Niagara Falls

Discover the top 7 airlines that operate flights from Irvine to Niagara Falls. Compare their services, reliability, and customer satisfaction ratings to choose the airline that best suits your travel preferences and needs. Over the last 7 days, Cheapflights users made 2,558,603 searches. Data last updated November 13, 2025.
AirlineCheapestAverageFlexibilityOn-time
Porter AirlinesCheapest$120Average$309FlexibilityNo cancel feeOn-time52%
WestJetCheapest$125Average$211FlexibilityNo cancel feeOn-time60%
DeltaCheapest$131Average$403FlexibilityNo cancel feeOn-timeN/A
Air CanadaCheapest$137Average$473FlexibilityNo cancel feeOn-time67%
Air TransatCheapest$151Average$363FlexibilityNo cancel feeOn-time50%
United AirlinesCheapest$159Average$419FlexibilityNo cancel feeOn-time69%
American AirlinesCheapest$235Average$564FlexibilityNo cancel feeOn-time71%

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