Find Cheap Flights from Portland to Singapore Changi (PDX - SIN)

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Portland to Singapore Changi Flight Information

Flights Arrive in Singapore Changi
Flights Depart from Portland
Flight Price $667
Distance 8128 miles
Airlines Japan Airlines, China Eastern, Delta, American Airlines, United, Korean Air, Cathay Pacific, Singapore Airlines

Good to Know

Low Season:
October
Best time to beat the crowds
3%
expected price decrease
High Season:
December
Most popular time to fly
7%
expected price increase
Average Price:
$1081
(avg. price over the last 2 weeks)
Good Deal:
$857
or less (round trip)

When to Book Flights from Portland to Singapore Changi

Average price per month
Flight prices as travel date approaches
-1 day
-2 days

Top Tips for Finding a Cheap Flight

Looking for a cheap flight? 25% of our users found flights on this route for $856 or less.
The cheapest flight from Portland to Singapore Changi was found 1 day before departure, on average.
Book at least 1 week before departure in order to get a below-average price.
Morning departure is around 2% cheaper than an evening flight, on average*.
*Average of the lowest prices shown in KAYAK’s search results for departures within the next 30 days

FAQs for Booking Portland to Singapore Changi Flights

How long does a flight from Portland to Singapore Changi take?
An average nonstop flight takes 20h 47m, covering a distance of 8128 miles.
Which airlines provide the cheapest flights from Portland to Singapore Changi?
In the past 3 days, the cheapest round-trip tickets were found on Multiple Airlines ($667), Japan Airlines ($745) and China Eastern ($811).
Do I need a passport to fly between Portland and Singapore Changi?
Yes.

Book cheap flights from Portland to Singapore Changi (round-trip)

Airports
Origin
Portland
$667
only
$667
Destination
Singapore
$667
only
$667
Tue, Sep 4
PDX
SIN
38h 55m
Mon, Sep 10
SIN
PDX
36h 21m
Trip: 7 days
Overall 0.0 Poor
Based on 0 reviews
Wed, May 2
PDX
SIN
33h 15m
Mon, May 14
SIN
PDX
40h 56m
Trip: 13 days
8.8ExcellentShow reviews
Overall 8.8 Excellent
Based on 3443 reviews
Overall
8.9
Boarding
9.0
Comfort
8.7
Crew
9.1
Entertainment
8.6
Food
8.5
MNL
NRT
Excellent 9.0

food from manila to japan was excellent,food japan to vancouver was not...could only eat half of it

NGO
NRT
Excellent 10.0

Quick efficient boarding. Smooth flight.

OKA
HND
Good 6.0

No AC

HND
SFO
Excellent 9.0

Liked creative approaches with the meals, with new/different menu - some room for improvements but generally good Loved the movie selection

Found the seats hard and uncomfortable after a few hours although the leg space was more generous in economy than United/ANA

LAX
SAN
Okay 4.3

That I probably won’t have to deal with AA for a while.

The boarding process was a joke. No seat assignments until the last second. The front desk personnel would not help us with a seat assignment and said they were “working on it”. I sat down with my wife in the waiting area and observed the front desk personnel joking around with each other for the next 45 minutes before the flight. Very unprofessional and not helpful. Not a good way to represent your airline.

Fri, May 18
PDX
SIN
58h 50m
Sun, May 27
SIN
PDX
53h 17m
Trip: 10 days
6.4GoodShow reviews
Overall 6.4 Good
Based on 4891 reviews
Overall
6.5
Boarding
6.6
Comfort
6.5
Crew
6.9
Entertainment
6.2
Food
5.9
PVG
PEK
Excellent 10.0

On time departure and early arrival

PVG
YVR
Excellent 8.6

Amazing flight

They never pick up the phone when you call them at their offices.

PVG
HKG
Excellent 8.0

Very comfortable flight. Crew was more engaged.

PVG
CEB
Okay 4.3

Flight attendants were very professional.

No individual entertainment or food. Rough ride and landing.

HGH
CAN
Excellent 9.0

Very helpful and courteous air crew

Everything was good and for a short flight Like this the crew made it very comfortable

Thu, May 24
PDX
SIN
20h 47m
Tue, May 29
SIN
PDX
18h 51m
Trip: 6 days
7.9GoodShow reviews
Overall 7.9 Good
Based on 17469 reviews
Overall
8.0
Boarding
8.1
Comfort
7.8
Crew
8.4
Entertainment
7.6
Food
7.4
DTW
SFO
Good 6.3

They were comprehensive and tried to move fast

Delayed flight because they didn’t had the crew ready

ATL
BOS
Excellent 9.3

Equipment was nice and well maintained. Seats are comfortable for coach. Video at each seat. Friendly staff.

LAX
SEA
Okay 4.0

The snacks were decent on the flight. Everything else was a disappointment.

Unexpected delay for take off after being told the flight was going to be on time. They couldn’t give us a reason or an eta on take off while waiting at the gate which affected my ride situation once I landed in Seattle.

LGA
DTW
Excellent 9.6

If we're going to be early, have a gate ready.

DTW
FCO
Mediocre 3.6

I began asking for my wheelchair escort the minute I got off the plane. I was assured in Houston they would be there when I got to Detroit. They were not. The request was clearly spelled out on my boarding pass along with my personal oxygen equipment information. I kept asking different staff and they would call for me then say somebody would be there. I waited for an entire hour and only when I started to cry did somebody do something. It was terribly stressful.

Wed, May 23
PDX
SIN
33h 07m
Fri, Jun 1
SIN
PDX
32h 02m
Trip: 10 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 30083 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.7
DFW
LGA
Mediocre 3.3

Delayed for about 45 mins

MCI
CLT
Excellent 10.0

On time. No delays. Smooth landing

N/a

CLT
JFK
Good 7.3

Crew was friendly and efficient

There wasn’t any entertainment but that was ok.

AMS
PHL
Okay 4.3

The in flight staff was very friendly

Our 2nd flight was changed by the airline, causing us to have a 6 hour layover in Philadelphia instead of a 2 hour layover. Then when we ask about changing to a different flight they told us that the original flight we were supposed to be on (that we booked over 8 months ago) was completely full so that’s why we were moved, and there were no other flights available to switch to. So we accepted that. But when we printed our boarding passes, we saw that our seats were now separate from each other, and they were both middle seats! I don’t understand how booking my tickets so far in advance still resulted in these issues. We were finally able to get an aisle and window seat (not near each other) but both flights had poor to little entertainment, which I wouldn’t have expected on such long flights with American Airlines. Really was letdown. :(

BCN
MIA
Good 6.6

Flight out to BCN was one of the worst in my life! Never had an agent (BA Denver) talk to you and then mid conversation say they closed 3 minutes ago (7 minutes in to trying to find a flight alternative for their cancelled flight...and I wasn’t being upset!)

Sun, May 20
PDX
SIN
30h 05m
Fri, Jun 1
SIN
PDX
24h 59m
Trip: 13 days
7.0GoodShow reviews
Overall 7.0 Good
Based on 56174 reviews
Overall
7.2
Boarding
7.4
Comfort
7.0
Crew
7.7
Entertainment
6.5
Food
6.5
ORD
CDG
Excellent 10.0

Check in and boarding went very smoothly. The crew was very attentive. They came through the cabin several times with the drink cart. And after dinner was served, gave everyone a bottle of water. Good choice of movies, food was good and the light breakfast was actually very filling. Excellent croissants. Overall great flight.

AMS
ORD
Excellent 10.0

Smooth, plenty empty seats, good food, excellent entertainment, friendly staff

A bit chilly

SFO
EWR
Good 7.2

Good selection of films as usual.

I had to put up with *loud* banter from 2 flight attendants at the back of the plane throughout the entire flight, which was freakin' annoying to say the least. I'm NOT interested which pilot or male attendant you find cute or want to make out with. You also really shouldn't laugh at passengers' faces after telling them to resume their seat to the upright position. A real shame since their performance "on the floor" was perfect.

IAH
CUN
Excellent 10.0

No carry-on charge, free beverages, in flight entertainment, great movie selections

HVN
EWR
Excellent 8.0

The crew was wonderful - professional, thoughtful, and lively!

The seats were so squished that it was difficult to get comfortable, especially on an overnight flight. Alas, this is now true of all air travel.

Mon, Jul 23
PDX
SIN
26h 20m
Sun, Aug 12
SIN
PDX
47h 11m
Trip: 21 days
8.7ExcellentShow reviews
Overall 8.7 Excellent
Based on 3980 reviews
Overall
8.8
Boarding
8.8
Comfort
8.7
Crew
9.1
Entertainment
8.6
Food
8.5
LAX
ICN
Excellent 8.3

Friendly crew, good food, roomy in economy (especially as the middle seat was not occupied).

Very limited movie/entertainment selection.

ICN
ATL
Okay 4.6

I could not book my seat ahead of time on the Korean air website

Middle seat stinks for a 15 hour flight

ICN
PEK
Excellent 10.0

Great service on board and the shiny new Terminal 2 at ICN didn't hurt!

Nothing to dislike.

ICN
ORD
Good 6.3

No any fruit available snack Lay over is too long!

HNL
ICN
Excellent 9.3

Selection of movies are great. They are new release and blockbusters

Its just because a 16 hours total flights. My body is sore from sitting long time in small seats and not a lot of room to move around.

Tue, Jun 26
PDX
SIN
29h 06m
Tue, Jul 10
SIN
PDX
36h 49m
$1256
Trip: 15 days
8.1ExcellentShow reviews
Overall 8.1 Excellent
Based on 4358 reviews
Overall
8.1
Boarding
8.1
Comfort
7.9
Crew
8.4
Entertainment
8.2
Food
7.7
YVR
JFK
Excellent 9.3

Food great, smooth flight. Helpful stewardess. Fairly comfy seats

HKG
NRT
Good 6.6

Incoming plane was late so that there off departure schedule. Flight to HK was late as well. Bad luck or bad scheduling?

JFK
HKG
Excellent 10.0

Cathay is a good Asian airline, and if you compare it to any American-based airlines, Cathay is exceptional. Staff are generally very friendly and helpful. Seats and food on economy are pretty good, as far as economy goes. Entertainment system is updated and offers a good variety of options.

They are a bit strict on carry on luggage weight but not that big of a deal.

HKG
EWR
Excellent 10.0

very friendly staff, meals were very good, much to choice in the inflight movies games, etc.

HKG
BOS
Good 7.0

Friendly & mature

Foods

Mon, May 21
PDX
SIN
24h 53m
Fri, Jun 1
SIN
PDX
30h 25m
$1330
Trip: 12 days
8.7ExcellentShow reviews
Overall 8.7 Excellent
Based on 2553 reviews
Overall
8.8
Boarding
8.9
Comfort
8.6
Crew
9.0
Entertainment
8.7
Food
8.4
NRT
LAX
Excellent 8.6

I booked regular economy and flew to Tokyo that way, but put a bid in for premium economy for the flight home and got it. It's not a big upgrade (bigger display panel, a little more leg room, seat tilt and it has a leg rest) but those things made the flight for me.

I don't have much on the down side front aside from the usual "would like more leg room" and "more seat tilt" so nothing new to report

ICN
LAX
Excellent 10.0

All of services, food, Language, clean air even so beautiful ~~

So nice and beautiful wearing also food is very good

NRT
LAX
Excellent 8.3

Cabin temperature was really hot.

SGN
SIN
Excellent 8.0

There was on flight attendance which I assume new. She was not able to manage to check with her colleagues whether there was still a food which I requested before giving me the answer. Also, to me little things like fold the cup holder before take off and landing is just a simple task to do without giving a lecture to the passenger when he or she might be tight up with kids.

SIN
DPS
Excellent 8.0

Very good service.

Tue, Sep 4
PDX
SIN
48h 45m
Tue, Sep 11
SIN
PDX
31h 04m
Trip: 8 days
Overall 0.0 Poor
Based on 0 reviews
Wed, Jun 6
PDX
SIN
27h 12m
Tue, Jun 12
SIN
PDX
32h 20m
Trip: 7 days
8.8ExcellentShow reviews
Overall 8.8 Excellent
Based on 3443 reviews
Overall
8.9
Boarding
9.0
Comfort
8.7
Crew
9.1
Entertainment
8.6
Food
8.5
HND
SFO
Excellent 9.0

Liked creative approaches with the meals, with new/different menu - some room for improvements but generally good Loved the movie selection

Found the seats hard and uncomfortable after a few hours although the leg space was more generous in economy than United/ANA

YVR
NRT
Excellent 10.0

New plane, excellent service both on the ground and air. Above average food.

LAX
SAN
Okay 4.3

That I probably won’t have to deal with AA for a while.

The boarding process was a joke. No seat assignments until the last second. The front desk personnel would not help us with a seat assignment and said they were “working on it”. I sat down with my wife in the waiting area and observed the front desk personnel joking around with each other for the next 45 minutes before the flight. Very unprofessional and not helpful. Not a good way to represent your airline.

HND
HIJ
Excellent 10.0

Lots of legroom

No complaints I was pleased

NRT
BOS
Excellent 10.0

Japan Airlines hasn’t the best customer service of any airline I have ever flown. Flight attendants aren’t very friendly and they give you a lot of food. The entertainment was great as well.

The staff at Tokyo Narita was slow and unfriendly, which doesn’t reflect well for Japan air.

Wed, May 16
PDX
SIN
22h 55m
Tue, May 29
SIN
PDX
32h 19m
Trip: 14 days
Overall 0.0 Poor
Based on 0 reviews
Sun, Sep 2
PDX
SIN
24h 10m
Mon, Sep 10
SIN
PDX
30h 50m
Trip: 9 days
8.8ExcellentShow reviews
Overall 8.8 Excellent
Based on 3443 reviews
Overall
8.9
Boarding
9.0
Comfort
8.7
Crew
9.1
Entertainment
8.6
Food
8.5
HND
SIN
Excellent 10.0

Great service Timely departure and arrival. JAL is really punctual

NRT
BOS
Excellent 10.0

Japan Airlines hasn’t the best customer service of any airline I have ever flown. Flight attendants aren’t very friendly and they give you a lot of food. The entertainment was great as well.

The staff at Tokyo Narita was slow and unfriendly, which doesn’t reflect well for Japan air.

LAX
SAN
Okay 4.3

That I probably won’t have to deal with AA for a while.

The boarding process was a joke. No seat assignments until the last second. The front desk personnel would not help us with a seat assignment and said they were “working on it”. I sat down with my wife in the waiting area and observed the front desk personnel joking around with each other for the next 45 minutes before the flight. Very unprofessional and not helpful. Not a good way to represent your airline.

OKA
HND
Good 6.0

No AC

SAN
NRT
Excellent 8.6

Flight crew was amazing. Respect for people at a level I haven’t seen on domestic US airlines. Seat configuration of 2-4-2 in economy was great. Food and entertainment was really good. Flight arrived on time with no issues.

That the level of service on other airlines isn’t at this level. Don’t go to AA looking for a good example.

Fri, May 18
PDX
SIN
20h 47m
Thu, May 31
SIN
PDX
18h 51m
Trip: 14 days
7.9GoodShow reviews
Overall 7.9 Good
Based on 17469 reviews
Overall
8.0
Boarding
8.1
Comfort
7.8
Crew
8.4
Entertainment
7.6
Food
7.4
ATL
DCA
Excellent 10.0

I will always fly Delta. I have tried other airlines and they don't conmpare to Delta's service

DTW
FCO
Mediocre 3.6

I began asking for my wheelchair escort the minute I got off the plane. I was assured in Houston they would be there when I got to Detroit. They were not. The request was clearly spelled out on my boarding pass along with my personal oxygen equipment information. I kept asking different staff and they would call for me then say somebody would be there. I waited for an entire hour and only when I started to cry did somebody do something. It was terribly stressful.

PDX
LAX
Excellent 8.3

On time, free beer , good price

No movie, no charging telephone

BOS
LGA
Excellent 10.0

Super nice flight attendant. Really made all of us (business travelers, retired military folks, family with little kids heading to a wedding) feel welcomed and happy. Great experience.

LGA
DTW
Excellent 9.6

If we're going to be early, have a gate ready.

Wed, May 16
PDX
SIN
22h 55m
Wed, May 30
SIN
PDX
24h 40m
Trip: 15 days
Overall 0.0 Poor
Based on 0 reviews
Sat, May 19
PDX
SIN
27h 12m
Thu, May 31
SIN
PDX
36h 52m
Trip: 13 days
7.2GoodShow reviews
Overall 7.2 Good
Based on 30083 reviews
Overall
7.4
Boarding
7.5
Comfort
7.1
Crew
7.8
Entertainment
6.7
Food
6.7
MCO
LAX
Excellent 8.0

Having to pay for wifi

MCI
CLT
Excellent 10.0

On time. No delays. Smooth landing

N/a

ORF
PHL
Excellent 9.0

No big crowds trying to board. Everyone had room for their items in the over head. Love the one seat by itself. Very short flight but the one steward still served beverages and cookies.

PHL
SFO
Okay 4.3

This plane had more legroom than our international flight which was strange but at least it was better.

See prior response

GNV
CLT
Good 6.6

The seats were comfy and spacious.

Sat, May 19
PDX
SIN
20h 47m
Tue, May 29
SIN
PDX
18h 51m
Trip: 11 days
7.9GoodShow reviews
Overall 7.9 Good
Based on 17469 reviews
Overall
8.0
Boarding
8.1
Comfort
7.8
Crew
8.4
Entertainment
7.6
Food
7.4
JFK
MXP
Excellent 9.6

Everything is good except our lunch as described below.

They ran out of chicken breast in our lunch packages, so the stewardess went back to get it. After 10 minutes she still did not show up, we turned on the help light, and still no one came. Finally she passed by and we reminded her the 2 chicken breast lunch packs, she said : "Sorry, I've forgotten about them" and ran back to get them for us.

IAH
DTW
Good 6.0

I liked the flight attendant in first class. Unfortunately I was not in first class

I did not like the attitude of the obese old man (I, too, am an obese old woman) as I saw it toward some of my cabin mates.

DTW
SFO
Good 6.3

They were comprehensive and tried to move fast

Delayed flight because they didn’t had the crew ready

ATL
DCA
Excellent 10.0

I will always fly Delta. I have tried other airlines and they don't conmpare to Delta's service

AUS
LAX
Excellent 8.3

love that each seat now has a USB connection to charge your phone

headphone jack to watch movies shorted in and out constantly

Mon, Sep 3
PDX
SIN
24h 10m
Wed, Sep 12
SIN
PDX
23h 38m
Trip: 10 days
Overall 0.0 Poor
Based on 0 reviews
Mon, May 21
PDX
SIN
24h 05m
Tue, May 29
SIN
PDX
34h 26m
Trip: 9 days
8.7ExcellentShow reviews
Overall 8.7 Excellent
Based on 3980 reviews
Overall
8.8
Boarding
8.8
Comfort
8.7
Crew
9.1
Entertainment
8.6
Food
8.5
ICN
MNL
Excellent 8.3

I would have given a 5 Stars for comfort if the cabin temperature is at least cooler not dry. Please please look into it.

ICN
SFO
Excellent 8.6

Food staff and entertainment are generally top notch

Didn't like headphone jack in panel display as it gets in the way of eating, which is a lot on international travel.

MNL
ICN
Good 7.0

Ended up in the middle seat even though i booked the flight 7 months ago

bad seating. the Korean air website would not let me pick my own seat in advance

ICN
PEK
Excellent 10.0

Great service on board and the shiny new Terminal 2 at ICN didn't hurt!

Nothing to dislike.

SFO
ICN
Excellent 8.0

The amount of times i was fed

My seat. I wanted to upgrade and they said no, but it wasn't full

Sat, May 12
PDX
SIN
27h 19m
Tue, May 22
SIN
PDX
26h 32m
Trip: 11 days
8.8ExcellentShow reviews
Overall 8.8 Excellent
Based on 3443 reviews
Overall
8.9
Boarding
9.0
Comfort
8.7
Crew
9.1
Entertainment
8.6
Food
8.5
YVR
NRT
Excellent 10.0

New plane, excellent service both on the ground and air. Above average food.

HND
SFO
Excellent 9.0

Liked creative approaches with the meals, with new/different menu - some room for improvements but generally good Loved the movie selection

Found the seats hard and uncomfortable after a few hours although the leg space was more generous in economy than United/ANA

NGO
NRT
Excellent 10.0

Quick efficient boarding. Smooth flight.

OKA
HND
Good 6.0

No AC

SAN
NRT
Excellent 8.6

Flight crew was amazing. Respect for people at a level I haven’t seen on domestic US airlines. Seat configuration of 2-4-2 in economy was great. Food and entertainment was really good. Flight arrived on time with no issues.

That the level of service on other airlines isn’t at this level. Don’t go to AA looking for a good example.

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The fares displayed include all taxes and fees for economy class travel and were found by the provider in the last 72 hours. Seats are limited and may not be available on all flights and days. Fares are subject to change and may not be available on all flights or dates of travel. Some carriers charge additional fees for extra checked bags. Please check the carriers' sites.