While Viktor is learning English from the bilingual New York guide-book, he comes across a page featuring the TV show Friends. He makes a point of repeating the English word "friends" and what is presumably its Krakhosian equivalent. The Cyrillic text which is Russian shows the title of the TV show as a phonetic equivalent "Frenz" of the original English title "Friends". In fact, TV show "Friends" is quite popular in Russian speaking countries as "Druzya" which is a literal translation of the word "friends" in Russian. So, the book wouldn't make such an obvious mistake.
At the beginning of the movie, some of the images of the "Krakhosian revolution" on the TVs in the terminal are from the 1989 Romanian Revolution. They include Romanian flags, and for a short time (in the VIP Red Carpet Lounge) an image from Brasov, a large Romanian city.
When Viktor Navorski first spends the night in the Terminal the planes outside make a lot of noise and scare him. However, after that moment the room suddenly seems soundproof. This is clear, for example, in the moment when Amelia confronts him, right before he shows her the fountain.
Amelia Warren says the croissant was invented in Romania. It was actually invented in Budapest, Hungary, after the Austro-Hungarian army defeated the Turks. It's shaped like a crescent because the Turkish flag includes a crescent moon.
When Amelia is stopped in immigration, Viktor waits for her by the gate. However, she must pass through the gate, which is in the international area where Viktor is allowed, to reach the immigration hall. Amelia should get off the aircraft and come through the gate.
When Frank and Victor are in Frank's office toward the beginning of the movie, Frank mentions a Twilight Zone episode named Nightmare At 30,000 Feet. The episode is actually named Nightmare At 20,000 Feet.
One of the stamps that Officer Torres puts on Viktor's form says 17 January 2004. A few days later when Dixon and Thurman discusses the office pool on Viktor leaving, Thurman says he's got "January 3rd."
When Viktor first sees the news about the revolution and the channel changes, he repeatedly speaks out loud in Bulgarian to change the channel. The first sentence is alright but the second is gibberish.
In the dinner on the patio scene, the way in which the waiter holds the lighter changes. When he lights the first candle, the lighter is resting on his arm. When he lights the second candle however, his left arm is at his side and in the next shot the lighter is resting on that arm.
When Viktor comes out of the hotel he has his large suitcase in is right hand. He calls the cab and opens the door with his now empty right hand and gets into the cab, apparently leaving his suitcase behind.
When Viktor, Frank and Joe are meeting in the office talking about Asylum for Viktor and establishing his fear, the position of the phone cord changes from being behind the phone to being over the middle of the desk several times in different shots with no one using the phone.
When Thurman runs out in front of the United 747 to Krakozhia, the plane stops just before a white line painted on the tarmac. In a following scene from a different angle, the plane is well past any white lines. It is possible that it isn't even on the same patch of concrete.
Viktor sees himself in the reflection of the Hugo Boss window. As he leaves the shop you can see the "naked" dummy. But the shirt Victor is wearing afterwards is completely different from the one worn by the dummy.
In the scene where Dixon is watching Viktor almost leave, when Viktor realizes that the camera is following him, we see the various screens in Dixon's room showing different locations in the airport. Suddenly all the screens show Viktor announcing that he will wait.
In the early part of the film, Viktor is often seen with both pieces of baggage: his carry on shoulder bag, and large suitcase. Just as often, he is seen without the suitcase, but there has been never been an establishment of where he would store it. The same situation applies to his overcoat.
When Viktor approaches Torres' desk, from her point of view, we can see his drivers license in front of his light green form in his hand. When the shot switches to Viktor's point of view, ie. the view from the other side, we still see the drivers license in front of the light green form.
During the celebration of the end of the war at the bar, Amelia arrives, hugs and congratulates him. During their conversation, the camera switches between shots including both their faces and shots from behind Amelia. When the camera is behind Amelia, you can see the shoulder strap of a bag/purse going across her back from left to right, but when you see her from the front their is clearly no strap.
When the INS Agent escorts Viktor into the terminal for the first time, a crew member's hand holds the doors open. The hand is not visible in shots of the same door from the same angle later in the film.
When Viktor is translating to Milodragovich, you see the shadow(s) of the camera and/or camera operator on his back when the shots are behind him and filming the front sides of Viktor, Frank, and the other officers.
When the plane from Krakhozia taxies to the gate at what is supposed to be a New York airport, a large Aéroports de Montréal (Montreal Airports Authority) logotype is clearly visible on a jetway in the distance.
At John F. Kennedy Airport, shortly after Officer Thurman escorts Viktor for the first time, the P.A. announces "Passengers of Air Canada flight 746 from Montreal must proceed to U.S. Immigration before claiming their luggage." Most large Canadian airports, including Montreal's Pierre Trudeau Airport, have U.S. border pre-clearance facilities. In other words, passengers flying from Montreal to New York would have cleared U.S. immigration in Montreal. Also, in real life, Air Canada flight 746 flies to Fiorello LaGuardia Airport, not JFK.
When Viktor walks into the United Airlines Red Carpet Club, he is stopped by a customer service agent who is wearing a United Airlines "crew" ID badge. Crew badges are only issued to Flight Officers and Flight Attendants. A ground crew member would have an ID badge issued by the John F. Kennedy airport.
The departure board indicates that Viktor's flight is bound for "Krakhosia," yet this board is supposed to show cities not countries. However, it's possible that the capital of fictitious Krakhosia is also named Krakhosia, just as the capitals of Mexico, Panama, Oklahoma and (formerly) Belize (whose capital is now relocated to Belmopan) share the country's/state's name, or that Krakhosia is a single-city nation like Singapore or San Marino. Either way, this is not necessarily a goof.
When Victor starts reading aloud the news headlines in the TV news, he pronounces "sixty-one dead in Khrakoshia", but the TV headlines actually say "61 dead". It is stated that Victor can't speak English, much less read it. How did he read the number correctly, then?
Benny Golson's first song is "Killer Joe"; Viktor has to wait at least until the end of the song (and more likely, the end of the set), before getting Golson's autograph. But when he leaves the club, autograph in hand, "Killer Joe" is still audible in the background.
When Viktor hails a cab to go back home after he leaves the Ramada, the taxi that pulls up doesn't have its light on, which means it has already been hired. In a close-up, it's a completely different taxi, with the light on.
When Viktor enters the cab at the end of the movie, the snow outside is falling extremely hard and practically cakes the car. However, when the cab pulls away and drives down the street, the snow stops and the car is as clean as ever.
When Navorski leaves the airport and hails a taxi, he stops when he sees Amelia behind him. Behind Amelia, a boy with a gray hat and green jacket walks past her. The scene switches back to Navorski, then switches back to Amelia again, and you can see the boy with the gray hat walking up to pass her again.
When Viktor leaves the terminal near the end of the movie, a large image of the Manhattan skyline is reflected in the glass of the airport. John F. Kennedy terminal is so far from Manhattan that the reflection of the skyline would be minuscule.
When Viktor is leaving the hotel at 161 Lexington to return to John F. Kennedy airport and home, the next scene in the taxi ride is Times Square. The route from the east side of Manhattan to JFK airport does not pass anywhere near Times Square.
If Krakhosia suspended all flights when Viktor was in the air, JFK airport would have to deal with all citizens arriving from Krakhosia, not only Viktor. However, Viktor could have connected in another country before heading to the U.S. and could have been the only Krakhosian on the flight.