The United States Air Force at Itazuke Air Base during the Korean War has a visitor: Jane Carter (Coleen Gray), a female journalist who wishes to do a feature story on the wives of the American pilots. Jane admits to the wing commander General Hale (Richard Arlen) that she is the wife of one of his squadron leaders, Colonel Gil Manton (Robert Stack). This is news to everyone.
Gil and Jane have been separated for two years. Jane prefers life under her former name as a major journalist with frequent travel, while Gil prefers a wife who will stay home and have a family. Gil is not only upset that Jane left their anniversary celebration to get a story from the wife of a Death Row prisoner about to be executed, but Gil feels Jane callously used and exploited the woman for a story. Gil has kept their separation a secret as a divorce would hurt his career.
Jane meets the wives and learns their motivations and that though they are open with each other, they hide their fears from their husbands lest it affect their performance.
Meanwhile, in the Korean War, military intelligence has discovered an enemy air base with jet Mikoyan-Gurevich MiG-15 and piston engine Yakovlev Yak-9 aircraft threatening the United Nations forces. General Hale wishes to lead a carefully synchronized combined airstrike of Boeing B-29 Superfortress bombers escorted by North American F-86 Sabre to deal with the enemy aircraft and Lockheed F-80 Shooting Star ground-attack aircraft to destroy the enemy’s anti-aircraft defenses.
General Hale’s superiors are sympathetic but inform the General that approval for such a massive combined operation can take a long time to approve. General Hale replies that the wet season in North Korea will begin in a week that would make the operation impossible after it has begun.
General Hale disobeys orders by personally flying an F-86 on a reconnaissance mission without escort over the target. After he is aloft, intelligence discovers the air base is located elsewhere and that what the General is flying over is a stronghold full of anti-aircraft weapons and enemy fighter aircraft.
The General is shot down; Jane is with the General's wife Marge (Julie Bishop) when Gil breaks the news of the loss of the General. Marge's incredible composure and courage brings Jane to tears and makes her reevaluate her marriage and behavior towards Gil.
Gil takes over command of the fighter wing and leads the escort mission protecting F-80 fighter-bombers and B-29 bombers on an attack against the North Korean air base. While their mission is successful, Gil loses three jet pilots. After consoling the wives of the pilots that were lost, Gil see Jane waiting for him at the gate, and they embrace.
Producer Carl Krueger had previously produced the William Wyler aviation film Thunderbolt! (1947) that was shot during World War II but not released until after the conflict.
Sabre Jet was made in cooperation with the United States Air Force and used four Korean War veterans of the air war as technical advisors. The film was mostly shot at Nellis Air Force Base near Las Vegas but also featured extensive use of actual World War II aerial combat film footage. When Sabre Jet eventually was relegated to television broadcasts, the film was screened in a black-and-white version.
The aircraft seen in Sabre Jet include Lockheed F-80 Shooting Star fighters as well as F-86 Sabres. Other aircraft included Republic F-84 Thunderjet, Aeronca L-16A, Douglas A-26 Invader and Boeing B-29 Superfortress (in archive footage). A number of F-86 Sabres were repainted to act as MiG-15s.
Sabre Jet was premiered in Dayton, Ohio, on September 3, 1953, during the National Air Show, in the presence of nine Korean aces, including Joseph McConnell Jr. The film was critically reviewed by Bosley Crowther in The New York Times. He noted: ""You'd never guess it from the title, but the little picture called 'Sabre Jet', which opened last night at the Criterion, is a great deal more concerned with the bravery of the wives of jet pilots than with that of the fellows who fly the planes." Aviation film historian Simon D. Beck in his recent The Aircraft-Spotter's Film and Television Companion, considered Sabre Jet, a "... thoughtful if emotionally distant" account of the air war in Korea.
In similar reviews, aviation film historian Stephen Pendo, in Aviation in the Cinema, described Sabre Jet, a "weak" example of the air war in Korea, especially singling out the female characters as being a stereotype of military wives, who were "... overly hysterical" when their husbands went to war. In a similar assessment, Aviation film historian Michael Paris in From the Wright Brothers to Top Gun: Aviation, Nationalism, and Popular Cinema, noted that the film was built around two elements, the missions flown by "Sabre" fighter pilots, and the effect on their families.