Find Cheap Flights from Seoul Incheon Intl Airport to Ontario (ICN - ONT)

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Looking for a cheap flight? 25% of our users found flights on this route for $752 or less.

FAQs for Booking Seoul Incheon Intl Airport to Ontario Flights

How long does a flight from Seoul Incheon Intl Airport to Ontario take?
An average nonstop flight takes 14h 48m, covering a distance of 6008 miles.
Which airlines provide the cheapest flights from Seoul Incheon Intl Airport to Ontario?
In the past 3 days, the cheapest round-trip tickets were found on Delta ($828), United ($902) and American Airlines ($927).
Do I need a passport to fly between Seoul Incheon Intl Airport and Ontario?
Yes.
What’s the cheapest day of the week to fly Seoul Incheon Intl Airport to Ontario?
For Seoul Incheon Intl Airport to Ontario, Wednesday is the cheapest day to fly on average and Monday is the most expensive. Flying from Ontario back to Seoul Incheon Intl Airport, the best deals are generally found on Tuesday, with Saturday being the most expensive.

Book cheap flights from Seoul Incheon Intl Airport to Ontario (round-trip)

Airports
Origin
Seoul
$828
only
$828
Destination
Ontario
$828
only
$828
Wed, Feb 7
ICN
ONT
20h 52m
Wed, Feb 21
ONT
ICN
17h 50m
Trip: 15 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 14179 reviews
Overall
8.0
Boarding
8.1
Comfort
7.7
Crew
8.4
Entertainment
7.5
Food
7.3
SLC
SJC
Excellent 9.6

As always, the crew and amenities were first rate.

We were initially told that our flight would arrive early. Then we sat on the tarmac for a half hour before anyone could be bothered to tell us we were waiting for the plane to be de-iced.

SEA
LAX
Okay 4.0

Nothing, they didn’t care about you or to help, the llady was so rude and unfriendly, this situation ruin my whole trip

I call in advance to paid the fees for baggage, I call Aeromexico because was the main airline for the fly, but Delta at Seattle made me paid again the fees for baggage’s even by phone they said that I didn’t need to paid. BE AWARE AND CAREFUL BECAUSE THE LADIES IN THE FRONT DESK didn’t even look the paperwork that you have in hand, they only want to charge you saying that your payment thru Aeromexico didn’t help you in the 1st fly. How this can happen when Delta and Aeromexico are two subsidiary one of another ?

SFO
DTW
Okay 4.0

Arrived.

Late, slow, de-icing in Detroit took nearly an hour!

SYR
MSP
Excellent 8.0

WiFi and free tv shows

My seat wouldn’t recline

JFK
SFO
Excellent 10.0

Seats were comfortable ... enough. Boarding process, once underway allowed me to get overhead bin and stash my other luggage in the seat below me. Flight wasn't overly booked (85-95%) so there appeared to be room for others to stretch out. Now about that crying kid...

Ugh. Weather delays. The flight was scheduled to board about 7P but it arrived late and they had to not only unload the self-loading cargo, but clean up afterwards. Would be nice to get a better estimate as to how long it would take to board so that I could hang out in the lounge. In addition, departure from JFK was delayed as well, either we missed the IFR window or got stuck behind some traffic and I fell asleep on the plane only to wake up what seemed an hour later just getting ready to hit V1. No upgrade.

Fri, Jan 19
ICN
ONT
14h 48m
Tue, Mar 6
ONT
ICN
15h 20m
Trip: 47 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 52264 reviews
Overall
7.2
Boarding
7.4
Comfort
6.9
Crew
7.7
Entertainment
6.5
Food
6.4
MIA
EWR
Mediocre 2.0

Nothing

The flight was over 4 hours delayed, and I didn't receive a notification that it was delayed until an hour after the flight was supposed to take off, which would have been ideal given that I had to pay 5x surge pricing for my uber to get there by the original scheduled time. Once we were about to board the plane, we were told again that it was further delayed. The crew was cranky and tired as they had clearly been dealing with delay issues the whole day. There were no tv's on the flight and we were told there would be free wifi to stream to our phones, however the wifi was so slow that it couldn't even load a single picture from the internet. Oh, there were also no decent food options on the flight. I will avoid United at all costs in the future, as my flight down was also over 3 hours delayed.

HNL
SFO
Good 6.0

Boarding goes quick, nice seats in economy comfort

No free food besides pretzels on an almost 8 hour flight. Any decent seat is an upchaege to economy plus. WiFi slow, only can access entertainment if you have app download on phone.

EWR
CLT
Good 7.3

very comfortable seats, and plane landed early

no free entertainment for personal devices. screen was broken and controller did not work.

EWR
LHR
Okay 5.3

Boarding was delayed because the aircraft was being serviced. None of the tray tables or screens were cleaned. They looked like people sneezed on them. Disgusting.

SBN
ORD
Mediocre 2.0

Can’t think of a thing on this flight.

Delay after delay. Took way too long for de-icing. The storage compartmemt door got stuck and I could not get my bag out. The flight attendant blamed the issue on my bag. She claimed it was too big. It was not. I have carried the bag on several flights with similar planes, the gate agent slowed it on the plane as many have, and I had no issue opening and closing other compartment as I tried a couple after maintenance retrieved my bag.

Fri, Jun 1
ICN
ONT
21h 43m
Sat, Jun 9
ONT
ICN
22h 16m
Trip: 9 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 25953 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
DCA
CLT
Excellent 10.0

seats were roomy, left early

DFW
TPA
Excellent 10.0

Timing of flight routes

Sat on a pillow

LAX
PHL
Excellent 10.0

Wonderful flight

The only thing I didn’t like is that he have any fresh food they said something was going on in LA that prevented him from giving us actual food other than that everything else was fine

SYD
LAX
Mediocre 3.3

We arrived safely. We were late but arrived safely. When we had to spend the night en route, the customer service desk was very kind and helpful.

Crew was grumpy and very unhelpful Lots of mechanical delays Kept being assured we would make our connections despite leaving late. In the end we had to change our route in order to have a chance at making it to our destination that day. Even that didn’t work though; we had to spend the night in Charlotte.

LHR
PHL
Excellent 10.0

The flight attendants were very nice and helpful

Nothing

Mon, Jan 22
ICN
ONT
31h 00m
Sun, Feb 4
ONT
ICN
42h 37m
$1323
Trip: 14 days
Overall 0.0 Poor
Based on 0 reviews
Mon, Feb 5
ICN
ONT
20h 52m
Tue, Feb 13
ONT
ICN
17h 50m
Trip: 9 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 14179 reviews
Overall
8.0
Boarding
8.1
Comfort
7.7
Crew
8.4
Entertainment
7.5
Food
7.3
SFO
DTW
Okay 4.0

Arrived.

Late, slow, de-icing in Detroit took nearly an hour!

ATL
MEX
Excellent 8.6

Sandwich for dinner

SLC
SJC
Excellent 9.6

As always, the crew and amenities were first rate.

We were initially told that our flight would arrive early. Then we sat on the tarmac for a half hour before anyone could be bothered to tell us we were waiting for the plane to be de-iced.

SLC
SNA
Excellent 8.0

Comfortable seats in coach Good snacks Friendly crew

Nothing

JFK
SFO
Excellent 10.0

Seats were comfortable ... enough. Boarding process, once underway allowed me to get overhead bin and stash my other luggage in the seat below me. Flight wasn't overly booked (85-95%) so there appeared to be room for others to stretch out. Now about that crying kid...

Ugh. Weather delays. The flight was scheduled to board about 7P but it arrived late and they had to not only unload the self-loading cargo, but clean up afterwards. Would be nice to get a better estimate as to how long it would take to board so that I could hang out in the lounge. In addition, departure from JFK was delayed as well, either we missed the IFR window or got stuck behind some traffic and I fell asleep on the plane only to wake up what seemed an hour later just getting ready to hit V1. No upgrade.

Sun, May 27
ICN
ONT
21h 43m
Sat, Jun 9
ONT
ICN
22h 16m
Trip: 14 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 25953 reviews
Overall
7.3
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.6
ABQ
DFW
Excellent 9.3

Great staff. Arrived very early. Smooth flight .

LAX
PHL
Excellent 10.0

A great flight

No real food to eat

LAX
NRT
Mediocre 2.0

nothing

had to take another flight, ticket agent was able to change me to a different flight on JAL. however, JAL could not access the ticket info and ticket agent would not take my payment. result was missing that flight, ticket manager told me it's my fault and tough luck no refund. American airlines told me the same, ended up losing my money for the ticket purchase. i booked another new flight with another airline direct. worst experience in my life using kayak.

LHR
PHL
Excellent 10.0

The flight attendants were very nice and helpful

Nothing

DFW
TPA
Excellent 10.0

Timing of flight routes

Sat on a pillow

Wed, Jan 10
ICN
ONT
20h 52m
Fri, Jan 19
ONT
ICN
17h 50m
$1174
Trip: 10 days
7.8GoodShow reviews
Overall 7.8 Good
Based on 14179 reviews
Overall
8.0
Boarding
8.1
Comfort
7.7
Crew
8.4
Entertainment
7.5
Food
7.3
IND
DTW
Okay 4.0

No wifi couldn’t do any work

Was looking forward to completing some work but the wifi never came on.

ATL
MEX
Excellent 8.6

Sandwich for dinner

LGA
YUL
Excellent 8.0

it was easy to navigate .

MCO
YYZ
Excellent 8.3

On time as scheduled.

N/A

SFO
DTW
Okay 4.0

Arrived.

Late, slow, de-icing in Detroit took nearly an hour!

*
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